.nav-item.open .nav-item.menu-item-has-children > .dropdown-toggle{
    position: absolute; right: 23px; font-size: 12px; margin-top: 0; height: 20px; width: 20px; line-height: 20px; text-align: center; top: 50%; transform: translateY(-50%); -webkit-transform: translateY(-50%); -moz-transform: translateY(-50%); -o-transform: translateY(-50%); -ms-transform: translateY(-50%);
    display: block;
}