body{
width:760px;
font-family:arial;
margin-left: auto;
margin-right: auto;
background-image:url("images/motif.jpg");
background-attachment:fixed;

}


#blocprinc{
font-size:10pt;
width:760px;
background-color:#C6E2FF;
border: 1px ridge black;
margin-top:20px;
margin-left: auto;
margin-right: auto;
}