#dd li {
  margin: 0;
  padding: 0;
  list-style: none;
  float: left;
}

#dd li a.menu {
  display: block;
  width: 118px;
}
.submenu {
  visibility: hidden;
  position: absolute;
  z-index: 3;
}

.submenu a {
  display: block;
  text-decoration: none;
}