#bandeautitre {
	background-image: url(../images/index/bandeauindex.jpg);
	height: 120px;
	width: 900px;
	margin-top: auto;
	margin-right: auto;
	margin-left: auto;
}
#contenuprincipal {
	height: 450px;
	width: 900px;
	margin-right: auto;
	margin-left: auto;
}
#soutient {
	background-image: url(../images/sponsors/soutient.jpg);
	height: 80px;
	width: 900px;
	margin-right: auto;
	margin-bottom: auto;
	margin-left: auto;
}