#top {
z-index:10;
position:relative;
top:36px;
left:20px;
width:734px;
height:398px;
background:url(../gfx/fonds/top.gif) no-repeat;
}

#contenu {
z-index:5;
position:relative;
top:20px;
left:22px;
width:728px;
padding:0 0 30px;
}