#principal {
position: relative;
text-align: center;
background-image: url("../gif/presse/background_presse_1e.jpg");
margin: auto;
margin-top: 50px;
width: 902px;
height: 525px;
}
.element {
position: absolute;
display: block;
z-index: 9;
}
.zoom {
position: absolute;
display: block;
z-index: 10;
}
.zoom_presse {
position: absolute;
display: none;
z-index: 15;
}