div.submenu {
  background: white;
  border: 1px solid #17284c;
  visibility: hidden;
  display: block;
  position: absolute;
  top: 150px;
  z-index: 300;
  padding: 15px;
  margin-left: 390px;
  text-align: left;
  line-height: 25px;
}

div.submenu a {
  text-decoration: none;
  font-size: 0.8em;
  padding: 3px;
}

div.submenu a:hover {
  background: #49A3FF;
  color: #FFF;
}