.nav {
 width:80px;
 height:30px;
 font-family: Arial, Helvetica;
 font-size:12px;
 font-weight:bold;
 text-decoration:none;
 text-align:center;
 margin-top:    4px; 
 color:#fff;
 background-color:#CCC;
 border-bottom:4px solid #AAA;
 border-right: 4px solid #AAA;
 border-top:   4px solid #DDD;
 border-left:  4px solid #DDD;
}
.nav:hover {
 color:FFFFFF;
 background-color:#CCC;
 border-bottom:4px solid #DDD;
 border-right: 4px solid #DDD;
 border-top:   4px solid #AAA;
 border-left:  4px solid #AAA;
}