body {
	width:100%;
	font-size: 4em;
	background-color: rgba(0, 0, 0, 0.05);
	}
#bandeau {	
	position: fixed; 
	top: 0; 
	left: 0;
	z-index: 999; 
	width: 100%;   
	text-align:center;
	background-color: #252525; 
	padding: 0px; 
	padding-top: 4px;
	margin: 0px;
	}
#annonce {
	width: 85%;
	margin: auto;
	margin-top: 300px;
	}