Paste code

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-2" />
<title>Untitled Document</title>
<style>

#contener1,#contener2 {
 position:relative;
 width:500px;
 margin:10px auto;
 clear:both;
 height:100px;
}

#d11,#d12,#d13 {
 position:absolute;
 top:0px;
}
#d21,#d22,#d23 {
 float:left;
}
#d11 {
 width:100px;
 height:100px;
 background-color:#900;
}
#d12{
 width:300px;
 height:100px;
 left:100px;
 background-color:#903;
}
#d13{
 width:100px;
 height:100px;
 right:0px;
 background-color:#909;
}
#d21{
 width:100px;
 background-color:#00F;
}
#d22{
 width:300px;
 background-color:#06F;
}
#d23 {
 width:100px;
 background-color:#0FF;
}

</style>
</head>

<body>

<div id="contener1">
<div id="d11">
dupa
</div>
<div id="d12">
dupa
</div>
<div id="d13">
dupa
</div>
</div>

<div id="contener2">
<div id="d21">
dupa
</div>
<div id="d22">
dupa
</div>
<div id="d23">
dupa
</div>
</div>

</body>
</html>