Création interface utilisateur pour modifier contenu html et css

Bonjour à tous.

Pour le taf j'ai créé une map du RER A (avec la très grande aide d'un membre du forum) avec entre autre :

- Un code couleur définissant l'état d'une gare : contenu CSS (1)
- Des informations relatives aux travaux d'une gare : contenu HTML (2)

Est-il possible en PHP de créer une interface utilisateur permettant à n'importe qui, sans passer par le code, de modifier (1) et (2) ?

Si oui, comment puis-je le faire.

Je peux également mettre mon code ici mais il est un peu long ( HTML : 600 lignes et CSS 200 lignes).

Voici le

Code:

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<!DOCTYP<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="" width=device-width, initial-scale="1.0, maximum-scale=1.0, minimal-ui"/>
    <link rel="stylesheet" href="app.css">
    <style type="text/css">
        .st0{fill:none;stroke:#000000;}
        .st1{fill:none;stroke:#E2231A;stroke-width:7.852;}
        .st2{stroke:#E2231A;stroke-width:7.852;}
        .st3{stroke:#000000;stroke-width:5;}
        .st4{font-family:'ArialMT';}
        .st5{font-size:31.4093px;}
        .st6{font-size:32px;}
        .st7{enable-background:new;}
        .st8{fill:#FFFFFF;}
        .st9{fill:#050D9E;}
        .st10{fill:#E2231A;}
        .st11{fill:none;}
        .st12{font-family:'Arial-BoldMT';}
        .st13{font-size:25.7578px;}
        .st14{font-size:48px;}
        .st15{fill:#FFFFFF;stroke:#000000;stroke-width:5;}
        .st16{fill:#1D1D1B;stroke:#000000;stroke-width:5;}
    </style>
</head>
<body>
 
<div class="map" id="map">
    <div class="map__image">
 
        <svg version="1.1"
             id="svg2" inkscape:output_extension="org.inkscape.output.svg.inkscape" inkscape:version="0.92.3 (2405546, 2018-03-11)" sodipodi:docname="RER_ligne_A_Paris_plan.svg" sodipodi:version="0.32" xmlns:cc="http://creativecommons.org/ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" xmlns:svg="http://www.w3.org/2000/svg"
             xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 2938.7 1075"
             style="enable-background:new 0 0 2938.7 1075;" xml:space="preserve">
          <g id="layer2" transform="translate(-96.135793,207.65463)" inkscape:groupmode="layer" inkscape:label="ligne" sodipodi:insensitive="true">
            <path id="path15678" inkscape:connector-curvature="0" sodipodi:nodetypes="cc" class="st0" d="M719.8,273.8v-96.7"/>
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            <!--branche A1-->
            <!--gare de Saint Germain en laye-->
            <g class="ville">
            <text transform="matrix(0.5 -0.866 0.866 0.5 400 975)" class="st4 st5">Saint-Germain-en-Laye</text>
                <circle class="saint_germain_en_laye" cx="543.6" cy="666.6" r="12.5"/>
                <text class="desc" x="1180" y="800"> Date début travaux : JJ/MM/AAAA
              <tspan x="1180" y="850"> Date fin travaux : JJ/MM/AAAA </tspan>
                    <tspan x="1180" y="900"> Type travaux : télésonorisation </tspan>
                    <tspan x="1180" y="950"> Code REFPAT :</tspan>
                    <tspan x="1180" y="1000"> Type baie : </tspan>
                    <tspan x="1180" y="1050"> Type interface : </tspan>
            </text>
          </g>
 
            <!--gare de Vésinet-Le Pecq-->
            <g class="ville">
            <text transform="matrix(0.5 -0.866 0.866 0.5 495 945)" class="st4 st5">Le Vésinet - Le Pecq</text>
                <circle class= "vesinet_le_pecq" cx="623.6" cy="666.6" r="12.5"/>
                <text class="desc" x="1180" y="800"> Date début travaux : JJ/MM/AAAA
              <tspan x="1180" y="850"> Date fin travaux : JJ/MM/AAAA </tspan>
                    <tspan x="1180" y="900"> Type travaux : télésonorisation </tspan>
                    <tspan x="1180" y="950"> Code REFPAT :</tspan>
                    <tspan x="1180" y="1000"> Type baie : </tspan>
                    <tspan x="1180" y="1050"> Type interface : </tspan>
            </text>
          </g>
 
            <!--gare de Vésinet-Centre-->
            <g class="ville">
            <text transform="matrix(0.5 -0.866 0.866 0.5 590 915)" class="st4 st5">Le Vésinet-Centre</text>
                <circle class="vesinet_centre" cx="703.6" cy="666.6" r="12.5"/>
                <text class="desc" x="1180" y="800"> Date début travaux : JJ/MM/AAAA
              <tspan x="1180" y="850"> Date fin travaux : JJ/MM/AAAA </tspan>
                    <tspan x="1180" y="900"> Type travaux : télésonorisation </tspan>
                    <tspan x="1180" y="950"> Code REFPAT :</tspan>
                    <tspan x="1180" y="1000"> Type baie : </tspan>
                    <tspan x="1180" y="1050"> Type interface : </tspan>
            </text>
          </g>
 
            <!--gare de Chatou-Croissy-->
            <g class="ville">
            <text transform="matrix(0.5 -0.866 0.866 0.5 685 890)" class="st4 st5">Chatou-Croissy</text>
                <circle class="chatou_croissy" cx="783.6" cy="666.6" r="12.5"/>
                <text class="desc" x="1180" y="800"> Date début travaux : JJ/MM/AAAA
              <tspan x="1180" y="850"> Date fin travaux : JJ/MM/AAAA </tspan>
                    <tspan x="1180" y="900"> Type travaux : télésonorisation </tspan>
                    <tspan x="1180" y="950"> Code REFPAT :</tspan>
                    <tspan x="1180" y="1000"> Type baie : </tspan>
                    <tspan x="1180" y="1050"> Type interface : </tspan>
            </text>
          </g>
 
            <-- même chose pour les autres gares, je les ai enlevé pour que ça soit plus visible ici-->
 
            <g id="layer1" transform="translate(0,307.09595)" inkscape:groupmode="layer" inkscape:label="logo" sodipodi:insensitive="true">
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            <rect x="1175.8" y="664" class="st11" width="555.8" height="115.6"/>
            <text transform="matrix(1 0 0 1 1251.1055 698.335)"><tspan x="20" y="-30" class="st12 st14">Migration Ligne A </tspan><tspan x="131.9" y="27.6" class="st12 st14">Phase 1</tspan></text>
 
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            <rect x="526.7" y="469.1" class="st11" width="35" height="22.3"/>
            <text transform="matrix(1 0 0 1 526.6845 487.4961)" class="st10 st12 st13">A5</text>
            <g id="g6200_5_" transform="matrix(2.4285712,0,0,2.4285712,-22.978154,-177.63837)">
            <path id="path6202_5_" inkscape:connector-curvature="0" class="st10" d="M46,240.1c0-5.7-4.6-10.3-10.3-10.3
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            <rect x="46.7" y="396" class="st11" width="35" height="22.3"/>
            <text transform="matrix(1 0 0 1 46.6848 414.4251)" class="st10 st12 st13">A3</text>
 
            <rect x="102.7" y="1015" class="st11" width="163.7" height="35.8"></rect>
            <text transform="matrix(1 0 0 1 110 1038)" class="st4 st5">Rien</text>
            <rect x="316.7" y="1015" class="st11" width="158.2" height="37.1"></rect>
            <text transform="matrix(1 0 0 1 280 1038)" class="st4 st5">En travaux</text>
            <rect x="550.8" y="1015" class="st11" width="291.7" height="34.4"></rect>
            <text transform="matrix(1 0 0 1 540 1038)" class="st4 st5">En tests</text>
            <rect x="1001.6" y="1015" class="st11" width="286.2" height="46.8"></rect>
            <text transform="matrix(1 0 0 1 765 1038)" class="st4 st5">Gare basculée</text>
 
            <circle class="rien" cx="200.1" cy="1026.5" r="12.5"></circle>
            <circle class="en_travaux" cx="450" cy="1026.5" r="12.5"></circle>
            <circle class="en_tests" cx="675" cy="1026.5" r="12.5"></circle>
            <circle class="gare_basculee" cx="980" cy="1026.5" r="12.5"></circle>
        </svg>
 
    </div>
    <div class="map__list">
 
    </div>
</div>
</body>
</html>

et le

Code:

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/* villes : text et circle au survol */
svg g.ville{
    cursor:pointer;
}
svg g.ville:hover > text:not(.desc) {
    font-weight:bold;
    fill:red;
}
svg g.ville:hover > circle {
    font-weight:bold;
    stroke:red;
    stroke-width:6;
}
/* description */
svg g.ville > text.desc {
    font-size:36px;
    fill:darkblue;
    display:none; /* on masque */
}
svg g.ville:hover > text.desc {
    display:block; /* on affiche */
}
 
/*
svg g:before {
  position:absolute;
  display:block;
  content:attr(id);
  top:100%;
  left:0;
  width:150px;
  height:50px;
  color:green;
  background:#fff;
  padding:10px;
  border:1px solid grey;
  z-index:10;
  display:none;
}
svg g:hover::before {
  display:block;
}
*/
 
/*branche A1*/
circle.saint_germain_en_laye{
    fill: white;
    stroke:#000000;
    stroke-width:5
}
circle.vesinet_le_pecq{
    fill: limegreen;
    stroke:#000000;
    stroke-width:5
}
circle.vesinet_centre{
    fill: deepskyblue;
    stroke:#000000;
    stroke-width:5
}
circle.chatou_croissy{
    fill: yellow;
    stroke:#000000;
    stroke-width:5
}
circle.rueil_malmaison{
    fill: white;
    stroke:#000000;
    stroke-width:5
}
 
<!-- etc etc etc pour toute les gares-->

Merci à vous :)