#tetracase {
   color:#E9E9E9;
   position:relative;
   overflow:hidden;
   height:390px;
   width:240px;
}

#tetracase a {
   color:#E9E9E9;
   font-weight:bold;
   font-size:110%;
}

.tetradiv {
   position:absolute;
   overflow:hidden;
   top:390px;
   left:0;
   height:170px;
   width:240px;
}

.tetradiv div {
   border:1px solid #c99;
   background:#396BAE;
   padding:5px;
   overflow:hidden;
}