body, html
{
height: 100%;
width: 100%;
}
body
{
margin-left: 0px;
margin-top: 0px;
margin-right: 0px;
margin-bottom: 0px;
background-image: url('images/fondroite.jpg');
}
.principal
{
position: absolute;
top: 0px;
left: 0px;
z-index: 0;
}
.contenu
{
position: absolute;
top: 400px;
left: 0px;
z-index: 20;
}