codice:
ul#navigazione {
  margin:0;
  padding:0;
  width:700px;
  list-style:none;
}
ul#navigazione li {
  margin:0;
  padding:0;
  display:inline;
  float:left;
}
ul#navigazione li a {
  width:100px;
  display:block;
  float:left;
  margin:0;
  padding:3px 5px;
  border:1px solid;
  border-color: #ccc #aaa #aaa #ccc;
  background: #f8f8ee;
  color: #000;
  font-weight: bold;
  text-decoration: none;
}
ul#navigazione li a:hover {
  background: #666;
  color: #fff;
  border-color: #aaa #ccc #ccc #aaa;
}