div {
	text-align:center;
	}
div#bandeau {
	width:600px;
	height:50px;
	background-color:#00CCFF;
	}
div#menu {
	float:left;
	width:100px;
	height:400px;
	background-color:#FF6699;
	}
div#contenu {
	float:left;
	width:500px;
	height:400px;
	background-color:#FFCC00;
	}
div#pied_page {
	clear:both;
	width:600px;
	height:50px;
	background-color:#33FF99;
	}