a.bulle,a.mappa {
     position:relative;
   }
   a.bulle:hover,a.mappa:hover {
      background: none;
      z-index: 50;
   }
   a.bulle span, a.mappa span {
     display: none;
   }
   a.bulle:hover span {
      display: block;
      position: absolute;
      top: 7em/*80px*/;
      left: -30em/*-450px*/;
   }
   a.mappa:hover span {
      display: block;
      position: absolute;
      top: 50px;
      left:-400px;
   }