* {margin:0; padding:0;}

body { 
  margin:0; padding:0;
 	background: #000000;
	color:#666666; 
	font-family: arial, verdana, sans-sherif;
	font-size:100%;
	text-align:center;
}

#conteneur {
position:absolute;
display:block;
left: 50%;
top: 50%;
width: 650px;
height: 600px;
}