li.open .dropdown-menu .dropdown:hover .dropdown-menu {
  display: block;
  top: -25%;
  right: 100%;
}

li.open .dropdown-menu .dropdown .caret {
  display: none;
}

li.open .dropdown-menu .dropdown > a:before {
  display: block;
  content: " ";
  float: left;
  width: 0;
  height: 0;
  border-color: transparent;
  border-style: solid;
  border-width: 5px 5px 5px 0;
  border-right-color: #999;
  margin-top: 5px;
  margin-left: -10px;
}