a.info_bulle span {
  background:none;
  border:none;
  height:100px;
  left:-2000em;
  overflow:hidden;
  position:absolute;
  top:-2000em;
  width:600px;
  display: none;
}

a.info_bulle {
  color:#2F368A;
  padding:2px 16px 2px 2px;
  position:relative;
  text-decoration:none;
}

a.info_bulle:hover {
  border:0 none;
  z-index: 20;
  color: #aa0000;
  text-decoration:none;
}

a.info_bulle:hover span {
  display: block;
  height:100px;
  left:40px;
  overflow:visible;
  top:0px;
  width:400px;
  text-decoration:none;
}