onglet en css

Ouais, pour faire ça il faut du JavaScript...

Mais tu as de la chance, j'ai justement un bout de code sous la main...

Bon, version de dev oblige, c'est du code brut de décoffrage, absolument non-optimisé, long, chiant à modifier lorsqu'il le faut, MAIS il marche.
Code:
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script type="text/javascript">
 
function getURLParamsByUrl(url)
{
	var paramsArray = new Array();
	var strHref = url;
	var posInterro=strHref.indexOf("?");
	if ( posInterro > -1 )
	{
		var strQueryString = strHref.substr(posInterro+1);
		var aQueryString = strQueryString.split("&");
		for ( var iParam = 0; iParam < aQueryString.length; iParam++ )
		{
			var nameValue = aQueryString[iParam].split("=");
			paramsArray.push(nameValue);
		}
	}
	return paramsArray;
}
 
 
function getURLParams()
{
        return getURLParamsByUrl(window.location.href);
}
 
 
function getParamValue(params,paramName)
{
        var i;
        for (i=0;i<params.length;i++)
        {
                if (paramName==params[i][0]) return params[i][1];
        }
        return null;
}
 
 
function switchPart()
{
	if ( document.getElementById("part").style.display != "block")
	{
		document.getElementById("inst").style.display = "none";
		document.getElementById("corp").style.display = "none";
		document.getElementById("part").style.display = "block";
		document.getElementById("ongPart").style.height = "32px";
		document.getElementById("ongCorp").style.height = "30px";
		document.getElementById("ongInst").style.height = "30px";
		document.getElementById("ongPart").style.backgroundColor = "white";
		document.getElementById("ongCorp").style.backgroundColor = "#dae2e9";
		document.getElementById("ongInst").style.backgroundColor = "#dae2e9";
	}
}
 
function switchCorp()
{
	if ( document.getElementById("corp").style.display != "block")
	{
		document.getElementById("inst").style.display = "none";
		document.getElementById("corp").style.display = "block";
		document.getElementById("part").style.display = "none";
		document.getElementById("ongPart").style.height = "30px";
		document.getElementById("ongCorp").style.height = "32px";
		document.getElementById("ongInst").style.height = "30px";
		document.getElementById("ongPart").style.backgroundColor = "#dae2e9";
		document.getElementById("ongCorp").style.backgroundColor = "white";
		document.getElementById("ongInst").style.backgroundColor = "#dae2e9";
	}
}
 
function switchInst()
{
	if ( document.getElementById("inst").style.display != "block")
	{
		document.getElementById("inst").style.display = "block";
		document.getElementById("corp").style.display = "none";
		document.getElementById("part").style.display = "none";
		document.getElementById("ongPart").style.height = "30px";
		document.getElementById("ongCorp").style.height = "30px";
		document.getElementById("ongInst").style.height = "32px";
		document.getElementById("ongPart").style.backgroundColor = "#dae2e9";
		document.getElementById("ongCorp").style.backgroundColor = "#dae2e9";
		document.getElementById("ongInst").style.backgroundColor = "white";
	}
}
 
</script>
<style>
#part{
display:block;
width:570px;
border:2px solid #b8cad6;
background-color:white;
padding-top:7px;
}
 
#corp{
display:none;
width:570px;
border:2px solid #b8cad6;
background-color:white;
padding-top:7px;
}
 
#inst{
display:none;
width:570px;
border:2px solid #b8cad6;
background-color:white;
padding-top:7px;
}
 
#onglets{
width:570px;
position:relative;
height:32px;
text-align:center;
vertical-align:middle;
}
 
#ongPart{
width:188px;
position:absolute;
left:0;
height:32px;
border:2px solid #b8cad6;
border-bottom:none;
background-color:white;
 
}
 
#onglets a{
line-height:30px;
}
 
#ongCorp{
width:188px;
position:absolute;
left:190px;
right:190px;
height:30px;
border:2px solid #b8cad6;
border-bottom:none;
background-color:#dae2e9;
}
 
#ongInst{
width:190px;
position:absolute;
right:-4px;
height:30px;
border:2px solid #b8cad6;
border-bottom:none;
background-color:#dae2e9;
}
 
 
#tarifs{
width:570px;
}
</style>
</head>
 
 
<body>
<div id="tarifs">
  <div id="onglets">
    <div id="ongPart"><a href="javascript:switchPart();">Tarifs particuliers</a></div>
    <div id="ongCorp"><a href="javascript:switchCorp();">Tarifs Entreprises</a></div>
    <div id="ongInst"><a href="javascript:switchInst();">Tarifs Education</a></div>
  </div>
  <div id="part"> Onglet 1 (Part) </div>
  <div id="corp"> Onglet 2 (Corp)</div>
  <div id="inst"> Onglet 3 (Inst)</div>
</div>
<script type="text/javascript">
	var choix = getParamValue(getURLParams(),"choix");
	if ( choix == 'inst' ) switchInst();
	else if (choix == 'corp' ) switchCorp();
	else switchPart();
</script>
</body>
</html>
Si bien évidemment c'est ce que tu cherchais à faire!

:king: