body {
     position: relative;
     margin-left: auto;
     margin-right: auto;
     width: 1280;
     text-align: left;
     
background-image:url(images/fond.jpg);
background-attachment : fixed; 
width:1280px;
}

#content {
     position: relative;
     margin-left: auto;
     margin-right: auto;
     width: 1108;
     text-align: left;
     
width:1108px;
margin-left:100px;
margin-top:75px;
}