#tetracase {
   	position:relative;
   	overflow:hidden;
/* border:1px solid red; */
	width:100%;
	height: 300px;
}

/* 
#tetracase a {
   font-weight:bold;
   font-size:120%;
}
 */

.tetradiv {
   position:absolute;
   overflow:hidden;
   top:300px;
   left:0;
   height:50px;
   width:282px;
}