<!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>
<title>Documento senza titolo</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<style type="text/css">
<!--
*{margin:0; border:0;padding:0; background-color:#FFFF00; font-size:100%}
#n6 {width:96%; background-color:#FF0000; height:500px;}
#d1 {width: 100px; background-color:#000099; float:right}
#d2 {width: 100px; background-color:#CC00FF; float:right }
-->
</style>
</head>

<body>
<div id="n6">
<div id="d1"></div>
<div id="d2"></div>



</div>
</body>
</html>

un container e 2 colonne con float right: serve niente altro ?
ps metti qualcosa nei div altrimenti non funzia