body {
margin: 0;
background:#fff;
text-align: center
}
#globale {
background-image:url('fond.jpg');
position:absolute;
left: 50%; top: 50%;
width: 1024px; height: 768px;
margin-top: -384px;
margin-left: -512px;
}
#flash{
position:absolute;
width:440px;
height:365px;
left:50%;
top:50%;
margin-top:-182.5;
margin-left:-220px;
}