BODY {
  color: #333333;
  margin: 0px;
  background-image: url(bg.jpg);
  background-attachment:fixed;
  font-size:12px;
  font-family:Arial, Helvetica, sans-serif;
}
.fra_gen
{
 background-image: url(bg_trans.png);
 padding:20px;
 width:640px;
 margin:auto;
}

.titre
{
color:#258655;
font-size:50px;
font-family: Comic Sans MS;
}

legend
{
color:#666666;
font-size:16px;
}