*
	{
	margin:0px;
	padding:0px;
	}
	
body
	{
	text-align:center;
	height:100%;
	}
	
#centrage
	{
	text-align:left;
	width:920px;
	margin-left:auto;
	margin-right:auto;
	}
	
#rectangle
	{
	position:absolute;
	width:920px;
	height:430px;
	top:50%;
	margin-top:-215px;
	}