@media only screen and (min-width: 991px) {
    .btco-hover-menu .collapse ul li{position:relative;}
    .btco-hover-menu .collapse ul li:hover> ul{display:block}
    .btco-hover-menu .collapse ul ul{position:absolute;top:100%;right:0;min-width:250px;display:none}
    /*******/
    .btco-hover-menu .collapse ul ul li{position:relative}
    .btco-hover-menu .collapse ul ul li:hover> ul{display:block}
    .btco-hover-menu .collapse ul ul ul{position:absolute;top:0;right:100%;min-width:250px;display:none}
    /*******/
    .btco-hover-menu .collapse ul ul ul li{position:relative}
    .btco-hover-menu .collapse ul ul ul li:hover ul{display:block}
    .btco-hover-menu .collapse ul ul ul ul{position:absolute;top:0;right:-100%;min-width:250px;display:none;z-index:1}
}