Inspirujte se, prosím!

.menu-item-has-children>ul{height:auto!important;overflow:visible;display:none;position:relative}.menu-item-has-children{position:relative}.menu-item-has-children:hover ul{display:block;position:absolute;top:100%;left:0;width:100%;z-index:10}header{position:static!important}.animate{opacity:1!important}#loader{display:none!important}