Division de cellules dans un tableau

**rlelamer** · 20/01/2020, 17h26

Bonjour,
J'ai un tableau qui est en superposition sur une image, il me sert pour référencer le kml de la zone.
Les kml correspondent une "découpe" d'une Map en 32 x 32, seulement certaines zones trop importantes en données (kml) ont été divisées.
J'arrive à découper la Map entière en zone de 32 x 32, par contre je n'arrive pas a créer les "découpes" dans une zone ...

Code HTML :

Sélectionner tout - Visualiser dans une fenêtre à part

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                <td align=center width=45>&nbsp;</td>
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                <td align=center width=45>832_352</td>
                <td align=center width=45>864_352</td>
                <td align=center width=45>896_352</td>
                <td align=center width=45>928_352</td>
                <td align=center width=45>960_352</td>
                <td align=center width=45>992_352</td>
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                <td align=center width=45>&nbsp;</td>
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                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
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                <td align=center width=45>320_384</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>384_384</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>512_384</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>608_384</td>
                <td align=center width=45>640_384</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>704_384</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>960_384</td>
                <td align=center width=45>992_384</td>
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                <td align=center width=45>&nbsp;</td>
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                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>288_416</td>
                <td align=center width=45>320_416</td>
                <td align=center width=45>352_416</td>
                <td align=center width=45>384_416</td>
                <td align=center width=45>416_416</td>
                <td align=center width=45>&nbsp;</td>
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                <td align=center width=45>&nbsp;</td>
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                <td align=center width=45>640_416</td>
                <td align=center width=45>672_416</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>736_416</td>
                <td align=center width=45>768_416</td>
                <td align=center width=45>800_416</td>
                <td align=center width=45>832_416</td>
                <td align=center width=45>864_416</td>
                <td align=center width=45>896_416</td>
                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>960_416</td>
                <td align=center width=45>&nbsp;</td>
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                <td align=center width=45>&nbsp;</td>
                <td align=center width=45>32_448</td>
                <td align=center width=45>64_448</td>
                <td align=center width=45>96_448</td>
                <td align=center width=45>128_448</td>
                <td align=center width=45>160_448</td>
                <td align=center width=45>192_448</td>
                <td align=center width=45>224_448</td>
                <td align=center width=45>256_448</td>
                <td align=center width=45>288_448</td>
                <td align=center width=45>320_448</td>
                <td align=center width=45>352_448</td>
                <td align=center width=45>384_448</td>
                <td align=center width=45>416_448</td>
                <td align=center width=45>448_448</td>
                <td align=center width=45>480_448</td>
                <td align=center width=45>512_448</td>
                <td align=center width=45>544_448</td>
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</body>
 
</html>

Nom : Capture d’écran 2020-01-20 à 17.08.02.png
Affichages : 165
Taille : 329,8 Ko

J'ai besoin de découper les zones identifiées (en rouge sur le screen) comme ceci :

# 128_96 => en deux à la verticale (128_96 / 144_96)
# 256_160 => en deux à la verticale (256_160 / 272_160)
# 288_128 => en deux à la verticale (288_160 / 304_160)
# 288_384 => en deux à la verticale (288_384* / 304_384) et la partie de gauche (288_384*) également en deux à l'horizontale (288_384 en haut / 288_400 en bas)
# 320_64 => en deux à la verticale (320_64 / 336_64)
# 320_96 => en deux à la verticale (320_96 / 336_96)
# 512_96 => en deux à la verticale (512_96 / 528_96)
# 544_64 => en deux à la verticale (544_64 / 560_64)

Comment je peux faire ça ?

Merci

Invité · 21/01/2020, 10h40

Bonjour,

si tu veux faire ça dans une seule <table>, ça va vite devenir compliqué.

"en deux à la verticale" : soit 2 colonnes. Ça veut dire que toutes les autres cellules de la colonne doivent avoir un colspan="2"
"en deux à l'horizontal" : soit 2 lignes. Ça veut dire que toutes les autres cellules de la rangée/ligne doivent avoir un rowspan="2"

**rlelamer** · 21/01/2020, 17h32

Bonjour jreaux62,
Ok compris le principe, je m'y attèle de suite.
Merci

**rlelamer** · 22/01/2020, 22h44

Bonsoir jreaux62,
J'ai suivi, non sans mal, tes indications (colspan & rowspan)

J'ai rencontré plusieurs problèmes, résolus sauf un :

- les cellules faisaient 45 x 45px, pour les scinder en deux c'était 22.5 x 45, le 0.5 il aime pas donc il me faisait des cellules de 22 x 45.
J'ai cherché sur le net et les demi pixel c'est "impossible" ou pas aisément facile à réaliser.
comme 46 x 46 ne passent pas sur mon petit écran je suis passé en 44 x 44 px pour les cellules.

- la taille de police me déformait les cellules, j'ai donc opter une autre façon de les référencer.

et plusieurs autres petits soucis du genre mais c'est bon, au final ça donne ça

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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<!DOCTYPE html>
<html>
 
<head>
    <style>
        td {
            box-sizing: border-box;
            max-width: 44px;
        }
 
        td:hover {
            border-color: #F50000;
            border-width: 2px;
            color: #C00000;
            box-sizing: border-box;
            overflow: visible;
            font-size: larger;
            max-width: 44px;
        }
 
    </style>
</head>
 
<body>
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                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>192_0</td>
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                <td align=center width=44 height=44 colspan=2>256_0</td>
                <td align=center width=44 height=44 colspan=2>288_0</td>
                <td align=center width=44 height=44 colspan=2>320_0</td>
                <td align=center width=44 height=44>352_0</td>
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                <td align=center width=44 height=44>&nbsp;</td>
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                <td align=center width=44 height=44 colspan=2>512_32</td>
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                <td align=center width=44 height=44>576_32</td>
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                <td align=center width=44 height=44>736_32</td>
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                <td align=center width=44 height=44>864_32</td>
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                <td align=center width=44 height=44>928_32</td>
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            </tr>
            <tr>
                <td align=center width=44 height=44>0_64</td>
                <td align=center width=44 height=44>32_64</td>
                <td align=center width=44 height=44>64_64</td>
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                <td align=center width=44 height=44 colspan=2>128_64</td>
                <td align=center width=44 height=44>&nbsp;</td>
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                <td align=center width=44 height=44>224_64</td>
                <td align=center width=44 height=44 colspan=2>256_64</td>
                <td align=center width=44 height=44 colspan=2>288_64</td>
                <td align=center width=22 height=44>J</td> <!-- 320_64 -->
                <td align=center width=22 height=44>K</td> <!-- 336_64 -->
                <td align=center width=44 height=44>352_64</td>
                <td align=center width=44 height=44>384_64</td>
                <td align=center width=44 height=44>416_64</td>
                <td align=center width=44 height=44>448_64</td>
                <td align=center width=44 height=44>480_64</td>
                <td align=center width=44 height=44 colspan=2>512_64</td>
                <td align=center width=22 height=44>P</td> <!-- 544_64 -->
                <td align=center width=22 height=44>Q</td> <!-- 560_64 -->
                <td align=center width=44 height=44>576_64</td>
                <td align=center width=44 height=44>608_64</td>
                <td align=center width=44 height=44>640_64</td>
                <td align=center width=44 height=44>&nbsp;</td>
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                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
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                <td align=center width=44 height=44>928_64</td>
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            </tr>
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                <td align=center width=44 height=44>0_96</td>
                <td align=center width=44 height=44>32_96</td>
                <td align=center width=44 height=44>64_96</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=22 height=44>A</td> <!-- 128_96 -->
                <td align=center width=22 height=44>B</td> <!-- 144_96 -->
                <td align=center width=44 height=44>160_96</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>256_96</td>
                <td align=center width=44 height=44 colspan=2>288_96</td>
                <td align=center width=22 height=44>L</td> <!-- 320_96 -->
                <td align=center width=22 height=44>M</td> <!-- 336_96 -->
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                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>480_96</td>
                <td align=center width=22 height=44>N</td> <!-- 512_96 -->
                <td align=center width=22 height=44>O</td> <!-- 528_96 -->
                <td align=center width=44 height=44 colspan=2>544_96</td>
                <td align=center width=44 height=44>576_96</td>
                <td align=center width=44 height=44>608_96</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>896_96</td>
                <td align=center width=44 height=44>928_96</td>
                <td align=center width=44 height=44>960_96</td>
                <td align=center width=44 height=44>992_96</td>
            </tr>
            <tr>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>128_128</td>
                <td align=center width=44 height=44>160_128</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>256_128</td>
                <td align=center width=22 height=44>E</td> <!-- 288_128 -->
                <td align=center width=22 height=44>F</td> <!-- 304_128 -->
                <td align=center width=44 height=44 colspan=2>320_128</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>416_128</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>480_128</td>
                <td align=center width=44 height=44 colspan=2>512_128</td>
                <td align=center width=44 height=44 colspan=2>544_128</td>
                <td align=center width=44 height=44>576_128</td>
                <td align=center width=44 height=44>608_128</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>832_128</td>
                <td align=center width=44 height=44>864_128</td>
                <td align=center width=44 height=44>896_128</td>
                <td align=center width=44 height=44>928_128</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
            </tr>
            <tr>
                <td align=center width=44 height=44>0_160</td>
                <td align=center width=44 height=44>32_160</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>160_160</td>
                <td align=center width=44 height=44>192_160</td>
                <td align=center width=44 height=44>224_160</td>
                <td align=center width=22 height=44>C</td> <!-- 256_160 -->
                <td align=center width=22 height=44>D</td> <!-- 272_160 -->
                <td align=center width=44 height=44 colspan=2>288_160</td>
                <td align=center width=44 height=44 colspan=2>320_160</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>448_160</td>
                <td align=center width=44 height=44>480_160</td>
                <td align=center width=44 height=44 colspan=2>512_160</td>
                <td align=center width=44 height=44 colspan=2>544_160</td>
                <td align=center width=44 height=44>576_160</td>
                <td align=center width=44 height=44>608_160</td>
                <td align=center width=44 height=44>640_160</td>
                <td align=center width=44 height=44>672_160</td>
                <td align=center width=44 height=44>704_160</td>
                <td align=center width=44 height=44>736_160</td>
                <td align=center width=44 height=44>768_160</td>
                <td align=center width=44 height=44>800_160</td>
                <td align=center width=44 height=44>832_160</td>
                <td align=center width=44 height=44>864_160</td>
                <td align=center width=44 height=44>896_160</td>
                <td align=center width=44 height=44>928_160</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
            </tr>
            <tr>
                <td align=center width=44 height=44>0_192</td>
                <td align=center width=44 height=44>32_192</td>
                <td align=center width=44 height=44>64_192</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>160_192</td>
                <td align=center width=44 height=44>192_192</td>
                <td align=center width=44 height=44>224_192</td>
                <td align=center width=44 height=44 colspan=2>256_192</td>
                <td align=center width=44 height=44 colspan=2>288_192</td>
                <td align=center width=44 height=44 colspan=2>320_192</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>416_192</td>
                <td align=center width=44 height=44>448_192</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>608_192</td>
                <td align=center width=44 height=44>640_192</td>
                <td align=center width=44 height=44>672_192</td>
                <td align=center width=44 height=44>704_192</td>
                <td align=center width=44 height=44>736_192</td>
                <td align=center width=44 height=44>768_192</td>
                <td align=center width=44 height=44>800_192</td>
                <td align=center width=44 height=44>832_192</td>
                <td align=center width=44 height=44>864_192</td>
                <td align=center width=44 height=44>896_192</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>960_192</td>
                <td align=center width=44 height=44>992_192</td>
            </tr>
            <tr>
                <td align=center width=44 height=44>0_224</td>
                <td align=center width=44 height=44>32_224</td>
                <td align=center width=44 height=44>64_224</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>224_224</td>
                <td align=center width=44 height=44 colspan=2>256_224</td>
                <td align=center width=44 height=44 colspan=2>288_224</td>
                <td align=center width=44 height=44 colspan=2>320_224</td>
                <td align=center width=44 height=44>352_224</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>448_224</td>
                <td align=center width=44 height=44>480_224</td>
                <td align=center width=44 height=44 colspan=2>512_224</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>608_224</td>
                <td align=center width=44 height=44>640_224</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>704_224</td>
                <td align=center width=44 height=44>736_224</td>
                <td align=center width=44 height=44>768_224</td>
                <td align=center width=44 height=44>800_224</td>
                <td align=center width=44 height=44>832_224</td>
                <td align=center width=44 height=44>864_224</td>
                <td align=center width=44 height=44>896_224</td>
                <td align=center width=44 height=44>928_224</td>
                <td align=center width=44 height=44>960_224</td>
                <td align=center width=44 height=44>992_224</td>
            </tr>
            <tr>
                <td align=center width=44 height=44>0_256</td>
                <td align=center width=44 height=44>32_256</td>
                <td align=center width=44 height=44>64_256</td>
                <td align=center width=44 height=44>96_256</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>224_256</td>
                <td align=center width=44 height=44 colspan=2>256_256</td>
                <td align=center width=44 height=44 colspan=2>288_256</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>352_256</td>
                <td align=center width=44 height=44>384_256</td>
                <td align=center width=44 height=44>416_256</td>
                <td align=center width=44 height=44>448_256</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>512_256</td>
                <td align=center width=44 height=44 colspan=2>544_256</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>608_256</td>
                <td align=center width=44 height=44>640_256</td>
                <td align=center width=44 height=44>672_256</td>
                <td align=center width=44 height=44>704_256</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>768_256</td>
                <td align=center width=44 height=44>800_256</td>
                <td align=center width=44 height=44>832_256</td>
                <td align=center width=44 height=44>864_256</td>
                <td align=center width=44 height=44>896_256</td>
                <td align=center width=44 height=44>928_256</td>
                <td align=center width=44 height=44>960_256</td>
                <td align=center width=44 height=44>992_256</td>
            </tr>
            <tr>
                <td align=center width=44 height=44>0_288</td>
                <td align=center width=44 height=44>32_288</td>
                <td align=center width=44 height=44>64_288</td>
                <td align=center width=44 height=44>96_288</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>288_288</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>384_288</td>
                <td align=center width=44 height=44>416_288</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>480_288</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>544_288</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>608_288</td>
                <td align=center width=44 height=44>640_288</td>
                <td align=center width=44 height=44>672_288</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>768_288</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>832_288</td>
                <td align=center width=44 height=44>864_288</td>
                <td align=center width=44 height=44>896_288</td>
                <td align=center width=44 height=44>928_288</td>
                <td align=center width=44 height=44>960_288</td>
                <td align=center width=44 height=44>992_288</td>
            </tr>
            <tr>
                <td align=center width=44 height=44>0_320</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>64_320</td>
                <td align=center width=44 height=44>96_320</td>
                <td align=center width=44 height=44 colspan=2>128_320</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>192_320</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>256_320</td>
                <td align=center width=44 height=44 colspan=2>288_320</td>
                <td align=center width=44 height=44 colspan=2>320_320</td>
                <td align=center width=44 height=44>352_320</td>
                <td align=center width=44 height=44>384_320</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>544_320</td>
                <td align=center width=44 height=44>576_320</td>
                <td align=center width=44 height=44>608_320</td>
                <td align=center width=44 height=44>640_320</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>832_320</td>
                <td align=center width=44 height=44>864_320</td>
                <td align=center width=44 height=44>896_320</td>
                <td align=center width=44 height=44>928_320</td>
                <td align=center width=44 height=44>960_320</td>
                <td align=center width=44 height=44>992_320</td>
            </tr>
            <tr>
                <td align=center width=44 height=44>0_352</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>256_352</td>
                <td align=center width=44 height=44 colspan=2>288_352</td>
                <td align=center width=44 height=44 colspan=2>320_352</td>
                <td align=center width=44 height=44>352_352</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>448_352</td>
                <td align=center width=44 height=44>480_352</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>544_352</td>
                <td align=center width=44 height=44>576_352</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>704_352</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>832_352</td>
                <td align=center width=44 height=44>864_352</td>
                <td align=center width=44 height=44>896_352</td>
                <td align=center width=44 height=44>928_352</td>
                <td align=center width=44 height=44>960_352</td>
                <td align=center width=44 height=44>992_352</td>
            </tr>
            <tr>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2 colspan=2>&nbsp;</td>
                <td align=center width=22 height=22>G</td> <!-- 288_384 -->
                <td align=center width=22 height=44 rowspan=2>I</td> <!-- 304_384 -->
                <td align=center width=44 height=44 rowspan=2 colspan=2>320_384</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>384_384</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2 colspan=2>512_384</td>
                <td align=center width=44 height=44 rowspan=2 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>608_384</td>
                <td align=center width=44 height=44 rowspan=2>640_384</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>704_384</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>&nbsp;</td>
                <td align=center width=44 height=44 rowspan=2>960_384</td>
                <td align=center width=44 height=44 rowspan=2>992_384</td>
            </tr>
            <tr>
                <td align=center width=22 height=22>H</td> <!-- 288_400 -->
            </tr>
            <tr>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>288_416</td>
                <td align=center width=44 height=44 colspan=2>320_416</td>
                <td align=center width=44 height=44>352_416</td>
                <td align=center width=44 height=44>384_416</td>
                <td align=center width=44 height=44>416_416</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>640_416</td>
                <td align=center width=44 height=44>672_416</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>736_416</td>
                <td align=center width=44 height=44>768_416</td>
                <td align=center width=44 height=44>800_416</td>
                <td align=center width=44 height=44>832_416</td>
                <td align=center width=44 height=44>864_416</td>
                <td align=center width=44 height=44>896_416</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>960_416</td>
                <td align=center width=44 height=44>&nbsp;</td>
            </tr>
            <tr>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>32_448</td>
                <td align=center width=44 height=44>64_448</td>
                <td align=center width=44 height=44>96_448</td>
                <td align=center width=44 height=44 colspan=2>128_448</td>
                <td align=center width=44 height=44>160_448</td>
                <td align=center width=44 height=44>192_448</td>
                <td align=center width=44 height=44>224_448</td>
                <td align=center width=44 height=44 colspan=2>256_448</td>
                <td align=center width=44 height=44 colspan=2>288_448</td>
                <td align=center width=44 height=44 colspan=2>320_448</td>
                <td align=center width=44 height=44>352_448</td>
                <td align=center width=44 height=44>384_448</td>
                <td align=center width=44 height=44>416_448</td>
                <td align=center width=44 height=44>448_448</td>
                <td align=center width=44 height=44>480_448</td>
                <td align=center width=44 height=44 colspan=2>512_448</td>
                <td align=center width=44 height=44 colspan=2>544_448</td>
                <td align=center width=44 height=44>576_448</td>
                <td align=center width=44 height=44>608_448</td>
                <td align=center width=44 height=44>640_448</td>
                <td align=center width=44 height=44>672_448</td>
                <td align=center width=44 height=44>704_448</td>
                <td align=center width=44 height=44>736_448</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>896_448</td>
                <td align=center width=44 height=44>928_448</td>
                <td align=center width=44 height=44>960_448</td>
                <td align=center width=44 height=44>992_448</td>
            </tr>
            <tr>
                <td align=center width=44 height=44>0_480</td>
                <td align=center width=44 height=44>32_480</td>
                <td align=center width=44 height=44>64_480</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>256_480</td>
                <td align=center width=44 height=44 colspan=2>288_480</td>
                <td align=center width=44 height=44 colspan=2>320_480</td>
                <td align=center width=44 height=44>352_480</td>
                <td align=center width=44 height=44>384_480</td>
                <td align=center width=44 height=44>416_480</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44 colspan=2>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>&nbsp;</td>
                <td align=center width=44 height=44>960_480</td>
                <td align=center width=44 height=44>992_480</td>
            </tr>
        </table>
        <p align=center>
            A => 128_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B => 144_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C => 256_160&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;D => 272_160&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;E => 288_128&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;F => 304_128&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;G => 288_384&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;H => 288_400&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I => 304_384&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;J => 320_64&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;K => 336_64&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;L => 320_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;M => 336_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N => 512_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;O => 528_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;P => 544_64&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Q => 560_64
        </p>
    </font>
</body>
 
</html>

Tout est ok sauf la première colonne, toutes les cellules sont de 42 x 44 et je ne comprends pas pourquoi ...
Ça me créer du coup un petit décalage

**NoSmoking** · 23/01/2020, 15h49

Bonjour,

J'ai cherché sur le net et les demi pixel c'est "impossible" ou pas aisément facile à réaliser.

tu auras plus vite fait de couper un cheveu en quatre q'un pixel en deux

Ceci étant je serais plutôt partie sur une intégration d'élément dans les <td> concernée plutôt que sur les colspan/rowspan.

De plus le CSS peut être un ami précieux pour alléger ton code HTML, car toutes ces répétitions <td align=center width=45> ont le don d'hérisser le poil !

Code css :

Sélectionner tout - Visualiser dans une fenêtre à part

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table {
  border: 1px solid #B3B3B3;
  border-collapse: collapse;
  font-size: 10px;
  background: url(./WorldMapKml.png);
  background-size: 1408px 704px;
}
td {
  box-sizing: border-box;
  height: 4.4em;
  max-width: 4.4em;
  min-width: 4.4em;
  border: 1px solid #B3B3B3;
  text-align: center;
}

Invité · 23/01/2020, 17h09

Bonjour,

1- Je suis d'accord avec NoSmoking.

Supprime tous les align=center width=44 height=44 : ça se gère en CSS.
ajoute des " : colspan="2", colspan="2".
On peut "fixer" les cellules avec table-layout: fixed;.
Remplace :
- width=22 height=22 -> class="td-demi-demi",
- width=22 height=44 -> class="td-demi-vert",
- width=44 height=22 -> class="td-demi-horz",

2- On obtient :

Code html :

Sélectionner tout - Visualiser dans une fenêtre à part

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<table id="la-table">
  <tr>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>192_0</td>
    <td>224_0</td>
    <td colspan="2">256_0</td>
    <td colspan="2">288_0</td>
    <td colspan="2">320_0</td>
    <td>352_0</td>
    <td>384_0</td>
    <td>416_0</td>
    <td>448_0</td>
    <td>&nbsp;</td>
    <td colspan="2">512_0</td>
    <td colspan="2">544_0</td>
    <td>576_0</td>
    <td>608_0</td>
    <td>640_0</td>
    <td>672_0</td>
    <td>&nbsp;</td>
    <td>736_0</td>
    <td>768_0</td>
    <td>800_0</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <td>0_32</td>
    <td>32_32</td>
    <td>64_32</td>
    <td>96_32</td>
    <td colspan="2">128_32</td>
    <td>160_32</td>
    <td>192_32</td>
    <td>224_32</td>
    <td colspan="2">256_32</td>
    <td colspan="2">288_32</td>
    <td colspan="2">320_32</td>
    <td>352_32</td>
    <td>&nbsp;</td>
    <td>416_32</td>
    <td>448_32</td>
    <td>480_32</td>
    <td colspan="2">512_32</td>
    <td colspan="2">544_32</td>
    <td>576_32</td>
    <td>608_32</td>
    <td>640_32</td>
    <td>672_32</td>
    <td>704_32</td>
    <td>736_32</td>
    <td>768_32</td>
    <td>800_32</td>
    <td>832_32</td>
    <td>864_32</td>
    <td>896_32</td>
    <td>928_32</td>
    <td>960_32</td>
    <td>992_32</td>
  </tr>
  <tr>
    <td>0_64</td>
    <td>32_64</td>
    <td>64_64</td>
    <td>96_64</td>
    <td colspan="2">128_64</td>
    <td>&nbsp;</td>
    <td>192_64</td>
    <td>224_64</td>
    <td colspan="2">256_64</td>
    <td colspan="2">288_64</td>
    <td class="td-demi-vert">J</td> <!-- 320_64 -->
    <td class="td-demi-vert">K</td> <!-- 336_64 -->
    <td>352_64</td>
    <td>384_64</td>
    <td>416_64</td>
    <td>448_64</td>
    <td>480_64</td>
    <td colspan="2">512_64</td>
    <td class="td-demi-vert">P</td> <!-- 544_64 -->
    <td class="td-demi-vert">Q</td> <!-- 560_64 -->
    <td>576_64</td>
    <td>608_64</td>
    <td>640_64</td>
    <td>&nbsp;</td>
    <td>704_64</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>896_64</td>
    <td>928_64</td>
    <td>960_64</td>
    <td>992_64</td>
  </tr>
  <tr>
    <td>0_96</td>
    <td>32_96</td>
    <td>64_96</td>
    <td>&nbsp;</td>
    <td class="td-demi-vert">A</td> <!-- 128_96 -->
    <td class="td-demi-vert">B</td> <!-- 144_96 -->
    <td>160_96</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">256_96</td>
    <td colspan="2">288_96</td>
    <td class="td-demi-vert">L</td> <!-- 320_96 -->
    <td class="td-demi-vert">M</td> <!-- 336_96 -->
    <td>352_96</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>480_96</td>
    <td class="td-demi-vert">N</td> <!-- 512_96 -->
    <td class="td-demi-vert">O</td> <!-- 528_96 -->
    <td colspan="2">544_96</td>
    <td>576_96</td>
    <td>608_96</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>896_96</td>
    <td>928_96</td>
    <td>960_96</td>
    <td>992_96</td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">128_128</td>
    <td>160_128</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">256_128</td>
    <td class="td-demi-vert">E</td> <!-- 288_128 -->
    <td class="td-demi-vert">F</td> <!-- 304_128 -->
    <td colspan="2">320_128</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>416_128</td>
    <td>&nbsp;</td>
    <td>480_128</td>
    <td colspan="2">512_128</td>
    <td colspan="2">544_128</td>
    <td>576_128</td>
    <td>608_128</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>832_128</td>
    <td>864_128</td>
    <td>896_128</td>
    <td>928_128</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <td>0_160</td>
    <td>32_160</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td>160_160</td>
    <td>192_160</td>
    <td>224_160</td>
    <td class="td-demi-vert">C</td> <!-- 256_160 -->
    <td class="td-demi-vert">D</td> <!-- 272_160 -->
    <td colspan="2">288_160</td>
    <td colspan="2">320_160</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>448_160</td>
    <td>480_160</td>
    <td colspan="2">512_160</td>
    <td colspan="2">544_160</td>
    <td>576_160</td>
    <td>608_160</td>
    <td>640_160</td>
    <td>672_160</td>
    <td>704_160</td>
    <td>736_160</td>
    <td>768_160</td>
    <td>800_160</td>
    <td>832_160</td>
    <td>864_160</td>
    <td>896_160</td>
    <td>928_160</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <td>0_192</td>
    <td>32_192</td>
    <td>64_192</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td>160_192</td>
    <td>192_192</td>
    <td>224_192</td>
    <td colspan="2">256_192</td>
    <td colspan="2">288_192</td>
    <td colspan="2">320_192</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>416_192</td>
    <td>448_192</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>608_192</td>
    <td>640_192</td>
    <td>672_192</td>
    <td>704_192</td>
    <td>736_192</td>
    <td>768_192</td>
    <td>800_192</td>
    <td>832_192</td>
    <td>864_192</td>
    <td>896_192</td>
    <td>&nbsp;</td>
    <td>960_192</td>
    <td>992_192</td>
  </tr>
  <tr>
    <td>0_224</td>
    <td>32_224</td>
    <td>64_224</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>224_224</td>
    <td colspan="2">256_224</td>
    <td colspan="2">288_224</td>
    <td colspan="2">320_224</td>
    <td>352_224</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>448_224</td>
    <td>480_224</td>
    <td colspan="2">512_224</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>608_224</td>
    <td>640_224</td>
    <td>&nbsp;</td>
    <td>704_224</td>
    <td>736_224</td>
    <td>768_224</td>
    <td>800_224</td>
    <td>832_224</td>
    <td>864_224</td>
    <td>896_224</td>
    <td>928_224</td>
    <td>960_224</td>
    <td>992_224</td>
  </tr>
  <tr>
    <td>0_256</td>
    <td>32_256</td>
    <td>64_256</td>
    <td>96_256</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>224_256</td>
    <td colspan="2">256_256</td>
    <td colspan="2">288_256</td>
    <td colspan="2">&nbsp;</td>
    <td>352_256</td>
    <td>384_256</td>
    <td>416_256</td>
    <td>448_256</td>
    <td>&nbsp;</td>
    <td colspan="2">512_256</td>
    <td colspan="2">544_256</td>
    <td>&nbsp;</td>
    <td>608_256</td>
    <td>640_256</td>
    <td>672_256</td>
    <td>704_256</td>
    <td>&nbsp;</td>
    <td>768_256</td>
    <td>800_256</td>
    <td>832_256</td>
    <td>864_256</td>
    <td>896_256</td>
    <td>928_256</td>
    <td>960_256</td>
    <td>992_256</td>
  </tr>
  <tr>
    <td>0_288</td>
    <td>32_288</td>
    <td>64_288</td>
    <td>96_288</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td colspan="2">288_288</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>384_288</td>
    <td>416_288</td>
    <td>&nbsp;</td>
    <td>480_288</td>
    <td colspan="2">&nbsp;</td>
    <td colspan="2">544_288</td>
    <td>&nbsp;</td>
    <td>608_288</td>
    <td>640_288</td>
    <td>672_288</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>768_288</td>
    <td>&nbsp;</td>
    <td>832_288</td>
    <td>864_288</td>
    <td>896_288</td>
    <td>928_288</td>
    <td>960_288</td>
    <td>992_288</td>
  </tr>
  <tr>
    <td>0_320</td>
    <td>&nbsp;</td>
    <td>64_320</td>
    <td>96_320</td>
    <td colspan="2">128_320</td>
    <td>&nbsp;</td>
    <td>192_320</td>
    <td>&nbsp;</td>
    <td colspan="2">256_320</td>
    <td colspan="2">288_320</td>
    <td colspan="2">320_320</td>
    <td>352_320</td>
    <td>384_320</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td colspan="2">544_320</td>
    <td>576_320</td>
    <td>608_320</td>
    <td>640_320</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>832_320</td>
    <td>864_320</td>
    <td>896_320</td>
    <td>928_320</td>
    <td>960_320</td>
    <td>992_320</td>
  </tr>
  <tr>
    <td>0_352</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">256_352</td>
    <td colspan="2">288_352</td>
    <td colspan="2">320_352</td>
    <td>352_352</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>448_352</td>
    <td>480_352</td>
    <td colspan="2">&nbsp;</td>
    <td colspan="2">544_352</td>
    <td>576_352</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>704_352</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>832_352</td>
    <td>864_352</td>
    <td>896_352</td>
    <td>928_352</td>
    <td>960_352</td>
    <td>992_352</td>
  </tr>
  <tr>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2" colspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2" colspan="2">&nbsp;</td>
    <td class="td-demi-demi">G</td> <!-- 288_384 -->
    <td class="td-demi-vert" rowspan="2">I</td> <!-- 304_384 -->
    <td rowspan="2" colspan="2">320_384</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">384_384</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2" colspan="2">512_384</td>
    <td rowspan="2" colspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">608_384</td>
    <td rowspan="2">640_384</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">704_384</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">&nbsp;</td>
    <td rowspan="2">960_384</td>
    <td rowspan="2">992_384</td>
  </tr>
  <tr>
    <td class="td-demi-demi">H</td> <!-- 288_400 -->
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td colspan="2">288_416</td>
    <td colspan="2">320_416</td>
    <td>352_416</td>
    <td>384_416</td>
    <td>416_416</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>640_416</td>
    <td>672_416</td>
    <td>&nbsp;</td>
    <td>736_416</td>
    <td>768_416</td>
    <td>800_416</td>
    <td>832_416</td>
    <td>864_416</td>
    <td>896_416</td>
    <td>&nbsp;</td>
    <td>960_416</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td>32_448</td>
    <td>64_448</td>
    <td>96_448</td>
    <td colspan="2">128_448</td>
    <td>160_448</td>
    <td>192_448</td>
    <td>224_448</td>
    <td colspan="2">256_448</td>
    <td colspan="2">288_448</td>
    <td colspan="2">320_448</td>
    <td>352_448</td>
    <td>384_448</td>
    <td>416_448</td>
    <td>448_448</td>
    <td>480_448</td>
    <td colspan="2">512_448</td>
    <td colspan="2">544_448</td>
    <td>576_448</td>
    <td>608_448</td>
    <td>640_448</td>
    <td>672_448</td>
    <td>704_448</td>
    <td>736_448</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>896_448</td>
    <td>928_448</td>
    <td>960_448</td>
    <td>992_448</td>
  </tr>
  <tr>
    <td>0_480</td>
    <td>32_480</td>
    <td>64_480</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">256_480</td>
    <td colspan="2">288_480</td>
    <td colspan="2">320_480</td>
    <td>352_480</td>
    <td>384_480</td>
    <td>416_480</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td colspan="2">&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>960_480</td>
    <td>992_480</td>
  </tr>
</table>

Code css :

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#la-table {
  border-collapse: collapse;
  font-size: 10px;
  width: 1408px;
  height: 704px;
  background: url('./WorldMapKml.png');
  background-size: 1408px 704px;
  table-layout: fixed;
  margin:0 auto;
}
 
#la-table td {
  box-sizing: border-box;
  width: 3.125%; /* 100%/32 cases */
  height: 6.25%; /* 100%/16 cases */
  border: 1px solid #B3B3B3;
  text-align: center;
  border: 1px solid #B3B3B3;
  overflow:hidden;
}
#la-table td.td-demi-demi {
  width: 1.5625%; /* 100%/64 cases */
  height: 3.125%; /* 100%/32 cases */
}
#la-table td.td-demi-vert {
  width: 1.5625%;
}
#la-table td.td-demi-horz {
  height: 3.125%;
}
 
#la-table td:hover {
  border: 2px solid #F50000;
  color: #C00000;
  overflow: visible;
  font-size: larger;
}

N.B. Un intérêt de définir les dimensions de cellules en % :
il suffit de modifier...

Code :

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#la-table {
  width: 1408px;
  height: 704px;
  background-size: 1408px 704px;
}

...pour redimensionner (en proportion) tout le tableau (et l'image de fond).

3- D'ailleurs, ces dimensions peuvent être recalculées dynamiquement en JavaScript :

Code JavaScript :

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"use strict";
const la_table = document.getElementById('la-table');
function la_table_resize()
{
  la_table.style.width = '100%'; // on définit à 100% du conteneur
  var W = la_table.clientWidth; // largeur en px
  var H = W / 2;
  la_table.style.height = H+'px';
  // background-size
  la_table.style.backgroundSize = W+'px '+H+'px';
}
window.onload = function(){
  la_table_resize();
}
window.onresize = function(){
  la_table_resize();
}

4- Résultat : https://codepen.io/jreaux62/pen/WNbPaeg

N.B. Evidemment, en dessous d'une certaine largeur de fenêtre, la table n'est plus très lisible...

**rlelamer** · 23/01/2020, 17h56

Bonsoir NoSmoking & jreaux62,
Merci de vos réponses, je reprends tout ça en appliquant vos conseils.

**rlelamer** · 25/01/2020, 00h47

Bonsoir NoSmoking & jreaux62,

J'ai mis en place vos solutions mais y'a de petites choses qui allaient pas.
En prenant mon fichier html de base, j'ai "converti" les redondances de codes (dépréciés) en css en m'aidant, pour la plupart, de vos conseils.

Le code final donne ceci

Code HTML :

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<!DOCTYPE html>
<html>
 
<head>
    <style>
        body {
            font-size: 10px;
        }
 
        table {
            border: 1px solid #B3B3B3;
            border-collapse: separate;
            border-spacing: 0 0;
            width: 1408px;
            height: 704px;
            background: url('./WorldMapKml.png');
            table-layout: fixed;
            margin: 0 auto;
        }
 
        td {
            border: 1px solid #B3B3B3;
            width: 44px;
            height: 44px;
            text-align: center;
            box-sizing: border-box;
        }
 
        td.half_vert {
            width: 22px;
            height: inherit;
        }
 
        td.half_half {
            width: 22px;
            height: 22px;
        }
 
        td:hover {
            border-color: #F50000;
            border-width: 2px;
            color: #C00000;
            box-sizing: border-box;
            overflow: visible;
            font-size: larger;
        }
 
        p {
            text-align: center;
        }
 
        span {
            border: 1px solid #B3B3B3;
        }
 
    </style>
</head>
 
<body>
    <table>
        <tr>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>192_0</td>
            <td>224_0</td>
            <td colspan="2">256_0</td>
            <td colspan="2">288_0</td>
            <td colspan="2">320_0</td>
            <td>352_0</td>
            <td>384_0</td>
            <td>416_0</td>
            <td>448_0</td>
            <td>&nbsp;</td>
            <td colspan="2">512_0</td>
            <td colspan="2">544_0</td>
            <td>576_0</td>
            <td>608_0</td>
            <td>640_0</td>
            <td>672_0</td>
            <td>&nbsp;</td>
            <td>736_0</td>
            <td>768_0</td>
            <td>800_0</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
        </tr>
        <tr>
            <td>0_32</td>
            <td>32_32</td>
            <td>64_32</td>
            <td>96_32</td>
            <td colspan="2">128_32</td>
            <td>160_32</td>
            <td>192_32</td>
            <td>224_32</td>
            <td colspan="2">256_32</td>
            <td colspan="2">288_32</td>
            <td colspan="2">320_32</td>
            <td>352_32</td>
            <td>&nbsp;</td>
            <td>416_32</td>
            <td>448_32</td>
            <td>480_32</td>
            <td colspan="2">512_32</td>
            <td colspan="2">544_32</td>
            <td>576_32</td>
            <td>608_32</td>
            <td>640_32</td>
            <td>672_32</td>
            <td>704_32</td>
            <td>736_32</td>
            <td>768_32</td>
            <td>800_32</td>
            <td>832_32</td>
            <td>864_32</td>
            <td>896_32</td>
            <td>928_32</td>
            <td>960_32</td>
            <td>992_32</td>
        </tr>
        <tr>
            <td>0_64</td>
            <td>32_64</td>
            <td>64_64</td>
            <td>96_64</td>
            <td colspan="2">128_64</td>
            <td>&nbsp;</td>
            <td>192_64</td>
            <td>224_64</td>
            <td colspan="2">256_64</td>
            <td colspan="2">288_64</td>
            <td class="half_vert">J</td> <!-- 320_64 -->
            <td class="half_vert">K</td> <!-- 336_64 -->
            <td>352_64</td>
            <td>384_64</td>
            <td>416_64</td>
            <td>448_64</td>
            <td>480_64</td>
            <td colspan="2">512_64</td>
            <td class="half_vert">P</td> <!-- 544_64 -->
            <td class="half_vert">Q</td> <!-- 560_64 -->
            <td>576_64</td>
            <td>608_64</td>
            <td>640_64</td>
            <td>&nbsp;</td>
            <td>704_64</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>896_64</td>
            <td>928_64</td>
            <td>960_64</td>
            <td>992_64</td>
        </tr>
        <tr>
            <td>0_96</td>
            <td>32_96</td>
            <td>64_96</td>
            <td>&nbsp;</td>
            <td class="half_vert">A</td> <!-- 128_96 -->
            <td class="half_vert">B</td> <!-- 144_96 -->
            <td>160_96</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">256_96</td>
            <td colspan="2">288_96</td>
            <td class="half_vert">L</td> <!-- 320_96 -->
            <td class="half_vert">M</td> <!-- 336_96 -->
            <td>352_96</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>480_96</td>
            <td class="half_vert">N</td> <!-- 512_96 -->
            <td class="half_vert">O</td> <!-- 528_96 -->
            <td colspan="2">544_96</td>
            <td>576_96</td>
            <td>608_96</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>896_96</td>
            <td>928_96</td>
            <td>960_96</td>
            <td>992_96</td>
        </tr>
        <tr>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">128_128</td>
            <td>160_128</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">256_128</td>
            <td class="half_vert">E</td> <!-- 288_128 -->
            <td class="half_vert">F</td> <!-- 304_128 -->
            <td colspan="2">320_128</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>416_128</td>
            <td>&nbsp;</td>
            <td>480_128</td>
            <td colspan="2">512_128</td>
            <td colspan="2">544_128</td>
            <td>576_128</td>
            <td>608_128</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>832_128</td>
            <td>864_128</td>
            <td>896_128</td>
            <td>928_128</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
        </tr>
        <tr>
            <td>0_160</td>
            <td>32_160</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td>160_160</td>
            <td>192_160</td>
            <td>224_160</td>
            <td class="half_vert">C</td> <!-- 256_160 -->
            <td class="half_vert">D</td> <!-- 272_160 -->
            <td colspan="2">288_160</td>
            <td colspan="2">320_160</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>448_160</td>
            <td>480_160</td>
            <td colspan="2">512_160</td>
            <td colspan="2">544_160</td>
            <td>576_160</td>
            <td>608_160</td>
            <td>640_160</td>
            <td>672_160</td>
            <td>704_160</td>
            <td>736_160</td>
            <td>768_160</td>
            <td>800_160</td>
            <td>832_160</td>
            <td>864_160</td>
            <td>896_160</td>
            <td>928_160</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
        </tr>
        <tr>
            <td>0_192</td>
            <td>32_192</td>
            <td>64_192</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td>160_192</td>
            <td>192_192</td>
            <td>224_192</td>
            <td colspan="2">256_192</td>
            <td colspan="2">288_192</td>
            <td colspan="2">320_192</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>416_192</td>
            <td>448_192</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>608_192</td>
            <td>640_192</td>
            <td>672_192</td>
            <td>704_192</td>
            <td>736_192</td>
            <td>768_192</td>
            <td>800_192</td>
            <td>832_192</td>
            <td>864_192</td>
            <td>896_192</td>
            <td>&nbsp;</td>
            <td>960_192</td>
            <td>992_192</td>
        </tr>
        <tr>
            <td>0_224</td>
            <td>32_224</td>
            <td>64_224</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>224_224</td>
            <td colspan="2">256_224</td>
            <td colspan="2">288_224</td>
            <td colspan="2">320_224</td>
            <td>352_224</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>448_224</td>
            <td>480_224</td>
            <td colspan="2">512_224</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>608_224</td>
            <td>640_224</td>
            <td>&nbsp;</td>
            <td>704_224</td>
            <td>736_224</td>
            <td>768_224</td>
            <td>800_224</td>
            <td>832_224</td>
            <td>864_224</td>
            <td>896_224</td>
            <td>928_224</td>
            <td>960_224</td>
            <td>992_224</td>
        </tr>
        <tr>
            <td>0_256</td>
            <td>32_256</td>
            <td>64_256</td>
            <td>96_256</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>224_256</td>
            <td colspan="2">256_256</td>
            <td colspan="2">288_256</td>
            <td colspan="2">&nbsp;</td>
            <td>352_256</td>
            <td>384_256</td>
            <td>416_256</td>
            <td>448_256</td>
            <td>&nbsp;</td>
            <td colspan="2">512_256</td>
            <td colspan="2">544_256</td>
            <td>&nbsp;</td>
            <td>608_256</td>
            <td>640_256</td>
            <td>672_256</td>
            <td>704_256</td>
            <td>&nbsp;</td>
            <td>768_256</td>
            <td>800_256</td>
            <td>832_256</td>
            <td>864_256</td>
            <td>896_256</td>
            <td>928_256</td>
            <td>960_256</td>
            <td>992_256</td>
        </tr>
        <tr>
            <td>0_288</td>
            <td>32_288</td>
            <td>64_288</td>
            <td>96_288</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td colspan="2">288_288</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>384_288</td>
            <td>416_288</td>
            <td>&nbsp;</td>
            <td>480_288</td>
            <td colspan="2">&nbsp;</td>
            <td colspan="2">544_288</td>
            <td>&nbsp;</td>
            <td>608_288</td>
            <td>640_288</td>
            <td>672_288</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>768_288</td>
            <td>&nbsp;</td>
            <td>832_288</td>
            <td>864_288</td>
            <td>896_288</td>
            <td>928_288</td>
            <td>960_288</td>
            <td>992_288</td>
        </tr>
        <tr>
            <td>0_320</td>
            <td>&nbsp;</td>
            <td>64_320</td>
            <td>96_320</td>
            <td colspan="2">128_320</td>
            <td>&nbsp;</td>
            <td>192_320</td>
            <td>&nbsp;</td>
            <td colspan="2">256_320</td>
            <td colspan="2">288_320</td>
            <td colspan="2">320_320</td>
            <td>352_320</td>
            <td>384_320</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td colspan="2">544_320</td>
            <td>576_320</td>
            <td>608_320</td>
            <td>640_320</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>832_320</td>
            <td>864_320</td>
            <td>896_320</td>
            <td>928_320</td>
            <td>960_320</td>
            <td>992_320</td>
        </tr>
        <tr>
            <td>0_352</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">256_352</td>
            <td colspan="2">288_352</td>
            <td colspan="2">320_352</td>
            <td>352_352</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>448_352</td>
            <td>480_352</td>
            <td colspan="2">&nbsp;</td>
            <td colspan="2">544_352</td>
            <td>576_352</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>704_352</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>832_352</td>
            <td>864_352</td>
            <td>896_352</td>
            <td>928_352</td>
            <td>960_352</td>
            <td>992_352</td>
        </tr>
        <tr>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2" colspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2" colspan="2">&nbsp;</td>
            <td class="half_half">G</td> <!-- 288_384 -->
            <td class="half_vert" rowspan="2">I</td> <!-- 304_384 -->
            <td rowspan="2" colspan="2">320_384</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">384_384</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2" colspan="2">512_384</td>
            <td rowspan="2" colspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">608_384</td>
            <td rowspan="2">640_384</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">704_384</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">&nbsp;</td>
            <td rowspan="2">960_384</td>
            <td rowspan="2">992_384</td>
        </tr>
        <tr>
            <td class="half_half">H</td> <!-- 288_400 -->
        </tr>
        <tr>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td colspan="2">288_416</td>
            <td colspan="2">320_416</td>
            <td>352_416</td>
            <td>384_416</td>
            <td>416_416</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>640_416</td>
            <td>672_416</td>
            <td>&nbsp;</td>
            <td>736_416</td>
            <td>768_416</td>
            <td>800_416</td>
            <td>832_416</td>
            <td>864_416</td>
            <td>896_416</td>
            <td>&nbsp;</td>
            <td>960_416</td>
            <td>&nbsp;</td>
        </tr>
        <tr>
            <td>&nbsp;</td>
            <td>32_448</td>
            <td>64_448</td>
            <td>96_448</td>
            <td colspan="2">128_448</td>
            <td>160_448</td>
            <td>192_448</td>
            <td>224_448</td>
            <td colspan="2">256_448</td>
            <td colspan="2">288_448</td>
            <td colspan="2">320_448</td>
            <td>352_448</td>
            <td>384_448</td>
            <td>416_448</td>
            <td>448_448</td>
            <td>480_448</td>
            <td colspan="2">512_448</td>
            <td colspan="2">544_448</td>
            <td>576_448</td>
            <td>608_448</td>
            <td>640_448</td>
            <td>672_448</td>
            <td>704_448</td>
            <td>736_448</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>896_448</td>
            <td>928_448</td>
            <td>960_448</td>
            <td>992_448</td>
        </tr>
        <tr>
            <td>0_480</td>
            <td>32_480</td>
            <td>64_480</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">256_480</td>
            <td colspan="2">288_480</td>
            <td colspan="2">320_480</td>
            <td>352_480</td>
            <td>384_480</td>
            <td>416_480</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td colspan="2">&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>960_480</td>
            <td>992_480</td>
        </tr>
    </table>
    <p>
        <span>A</span> : 128_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>B</span> : 144_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>C</span> : 256_160&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>D</span> : 272_160&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>E</span> : 288_128&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>F</span> : 304_128&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>G</span> : 288_384&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>H</span> : 288_400&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>I</span> : 304_384&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>J</span> : 320_64&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>K</span> : 336_64&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>L</span> : 320_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>M</span> : 336_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>N</span> : 512_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>O</span> : 528_96&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>P</span> : 544_64&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span>Q</span> : 560_64
    </p>
</body>
 
</html>

Ça fonctionne comme voulu, si vous y voyez une mauvaise façon de faire merci de me l'indiquer.
Il me reste une dernière chose a faire, je n'ai pas encore rechercher comment faire, c'est de "lier" la surbrillance des cellules A, B, C, [...] et Q avec leur correspondance dans la ligne sous le tableau.
Quand je mets en surbrillance la cellule A, je souhaiterais que <span>A</span> : 128_96 soit également en surbrillance.
Si je ne trouve pas, je poserais la question.
Merci de votre aide en tout cas 😉

**NoSmoking** · 25/01/2020, 10h43

Concernant ton dernier point, je n'aurais pas eu la même approche, j'aurais mis les informations dans les <td> sous cette forme :

Code html :

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<td></td>
<td class="half_vert">
  A<span class="plus">128_96</span>
</td>
<td class="half_vert">
  B<span class="plus">144_96</span>
</td>
<td>160_96</td>

En cachant les <span> dans un premier temps il est possible de les afficher au survol de la cellule avec un minimum de CSS, on peut même avoir un petit « effet sympa » ^(*) avec par exemple :

Code css :

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.plus {
  z-index: 1000;
  position: absolute;
  top: 0;
  left: 50%;
  padding: .25em;
  border: 1px solid #F00;
  font-size: 2em;
  background: rgba(255,255,255,.5);
  transition: all .25s;
  transform: scale(0) translate(-50%, -100%);
  transform-origin: -0% -50%;
}
td:hover .plus {
  transform: scale(1) translate(-50%, -100%);
}

[EDIT] Important : ne pas oublier de mettre les <td> en position:relative pour quelles servent de référent.

Concernant la largeur des textes dans les <td>, il y a une propriété CSS qui permet dans réduire la largeur, essaie en mettant un letter-spacing:-1px sur tes <td>.

Dernier point, les   sont parfaitement inutiles dans tes <td> et leur présence t'empêche éventuellement d'appliquer le :hover que sur des éléments non vide via un

Code css :

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td:not(:empty):hover { /* tes déclarations */ }

^(*) c'est très subjectif !

Invité · 25/01/2020, 10h52

@NoSmoking
J'ai eu une approche similaire, mais avec data-*.
+ création dynamique de tooltips (en JS) pour chaque cellule contenant du texte.

https://codepen.io/jreaux62/pen/WNbPaeg

Code html :

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    <td class="td-demi-demi" data-txt="288_400">H</td> <!-- 288_400 -->

Code javascript :

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const la_table_tds = document.querySelectorAll('#la-table td');
// -------------------------
// Tooltip sur td
function la_table_td_create_tooltip()
{
  la_table_tds.forEach( function(td){
    let text = td.textContent.trim();
    if( td.dataset.txt )
    {
      text = td.dataset.txt.trim();
    }
    if( text != '' )
    {
      let span = document.createElement('span');
      span.textContent = text;
      span.classList.add('tooltip');
      td.appendChild(span);
    }
  })
}

Code css :

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/* -------------- */
/* Tooltip sur td */
#la-table td {
  position:relative;
}
#la-table td span.tooltip {
  display:none;
  position:absolute;
  box-sizing: border-box;
  min-width:150%;
  min-height:150%;
  background:#fff;
  top:-25%;
  left:-25%;
  border: 2px solid #F50000;
  color: #C00000;
  padding:2px;
  z-index:2;
}
#la-table td:hover span.tooltip {
  display:flex;
  font-size: larger;
  align-items:center;
  justify-content:center;
}

**NoSmoking** · 27/01/2020, 12h12

Bizarre, plusieurs notifications non reçues !!!

@NoSmoking
J'ai eu une approche similaire, mais avec data-*.
+ création dynamique de tooltips (en JS) pour chaque cellule contenant du texte.

Dans le cas présent tout peut être géré en CSS, pourquoi s'en priver !

En reprenant la structure sur base de colspan/rowspan, en mettant les infos dans un <span>, en reprenant l'essentiel du CSS que j'ai indiqué en l'aménageant voilà ce que cela donnerait :

Exemple en ligne : Division de cellule dans un tableau

J'ai ajouté un peu de JavaScript mais uniquement pour pouvoir zoomer/dézoomer la carte en modifiant la taille de la police de celle-ci, cela peut-être utile.
J'ai noté que FireFox est toujours un peu à la traine sur certains effets CSS3 comme par exemple la transformation scale, le rendu n'étant pas toujours très propre, je pensais cela réglé.

Division de cellules dans un tableau

HTML

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