html,body {
	margin: 0px;
	width: 99%;
	background-image: url(bg_fond.gif);
	background-repeat: repeat-x;
	background-position: left top;
	background-color: #333333;
}

.cadre_exterieur{
	position:absolute;
	left:50%;
	width: 1000px;
	margin-left:-500px;
	margin-top:0px;
}

.menu {
	width: 100%;
}

.sous_menu {
	width: 100%;
}

.center {
	width: 100%;
	height: 500px;
	vertical-align: middle;
}

.bottom {
	width: 100%;
}


.spacer {
  clear: both;
}