div#conteneur {
	width: 930px;
	margin: 0 auto;
}
div#contenu {
	float: right;
	width: 630px;
	padding: 0 20px 20px 20px;
}
div#navigation {
	float: left;
	width: 250px;
	margin: 0 0 0 10px;
}
div#extra {
	float: left;
	clear: left;
	width: 250px;
	margin: 0 0 0 10px;
}
div#pied {
	clear: both;
	width: 100%;
}