.dropdown-submenu {
  position: relative;
}

.dropdown-submenu > .dropdown-menu {
  top: 0;
  left: 100%;
  margin-top: 5px;
  margin-left: -1px;
  -webkit-border-radius: 0 4px 4px 4px;
  -moz-border-radius: 0 4px 4px 4px;
  border-radius: 0 4px 4px 4px;
}

@media (max-width: 991px) {
  .dropdown-submenu > ul {
    padding-left: 15px;
  }
}

@media (min-width: 992px) {
  .dropdown-submenu .caret {
    border-left: 4px solid;
    border-right: 0;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
  }
}