div.principal{
	clear:both;
	margin-left : 0%;
	background-color:transparent;

}
div.contenu{
	text-align:center;
}
img.recipisse,img.csa{
	border:solid;
	border-color:#000000;
	border-width:1px;
}
img.csa{
	width:100%;
	height:100%;
}