html, body {
	margin:0;
	padding:10px;
	}

body {
	background-color:#000000;
	background:url(accueil_img/fond.jpg) no-repeat center fixed;
	-webkit-background-size:cover; /* pour anciens Chrome et Safari */
	background-size:cover;
}
	
#titre {
text-align:center;
vertical-align:middle;
}

#porte {
	opacity:0.3;
	position:relative;
	top:20px;
	width:320px;
	margin-left:auto;
	margin-right:auto;
	z-index:0;
}

#herse {
	width:139px;
	height:300px;
	position:absolute;
	top:55px;
	left:83px;
	z-index:1;
}

#footer{
	position:fixed;
	width:300px;
	height:60px;
	left:50%;
	bottom:0px;
	transform: translate(-50%, -50%);
	margin: 0 auto;
}