#tetracase {
   position:relative;
   overflow:hidden;
   height:190px;
   width:170px;
}

#tetracase a {
   font-weight:;
   font-size:90%;
}

.tetradiv {
   position:absolute;
   overflow:hidden;
   top:190px;
   left:0;
   height:194px;
   width:170px;
}

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