body {
background:url("http://www.benprobox.fr/images/fond.jpg") repeat fixed 50% 0 #5A9FDF;
color:#FFFFFF;
font-family:"Lucida Grande","Lucida Sans Unicode",Verdana,'Bitstream Vera Sans',Times,serif;
font-size:12px;
margin:0;
padding:0;
}
div#main {
float:none;
height:auto !important;
min-width:450px;
overflow:hidden !important;
padding:0;
width:50%;
margin:auto; 
}
div#main_content {
-moz-border-radius:12px 12px 12px 12px;
background-color:#3D8CD0;
border:2px solid #000000;
border-spacing:1px;
margin-top:20%;
opacity:0.85;
padding:5px 10px 20px;
width:auto;
}
div#title  {
margin-left:auto;
margin-right:auto;
text-align:center;
width:50%;
text-align:center;
}