body{text-align: center;}
h2{
	text-align: center;
	font-size: 40px;
	font-weight: normal;
	background-repeat: no-repeat;
	background-position: center center;
	background-size: cover;
	cursor: pointer;
	-webkit-transition: color linear 0.2s;
	-moz-transition: color linear 0.2s;
	-ms-transition: color linear 0.2s;
	-o-transition: color linear 0.2s;
	transition: color linear 0.2s;
	margin: 10px 0 20px;
	border: 1px solid rgb(200,200,200);
}
	h2 a{
		display: block;
		line-height: 200px;
		color: inherit;
		text-decoration: none;
		background-color: rgba(255,255,255,0.6);
	}
	h2:hover{color: rgb(90,105,205);}
#header_pe{background-image: url('/img/bandeau_pe.jpg');}
#header_ob{background-image: url('/img/bandeau_ob.jpg');}