.ets_prmn_megamenu.ets_transition_slide_down .prmn_columns_ul{
    transition: none;
    -webkit-transition: none;
}
.ets_prmn_megamenu.ets_transition_slide_down .prmn_columns_ul.prmn_columns_ul_tab {
    height: auto;
    overflow: visible;
}
@media(min-width: 768px){
    .ets_transition_slide_down .prmn_columns_ul{
        display: none;
    }
    .ets_transition_slide_down:not(.click_open_submenu) li:hover .prmn_columns_ul,
    .ets_transition_slide_down.click_open_submenu li .prmn_columns_ul.open {
        transform-origin: top center;
        animation: transition_slidedown 300ms ease-in both;
        animation-iteration-count: 1;
        animation-timing-function: linear;
        display: block;
    }
    @-webkit-keyframes transition_slidedown{
        0% {
            opacity: 0;
            transform-origin: top;
            transform: scaleY(0);
        }
        50% {
            opacity: 1;
        }
        100%{
            transform: scaleY(1);
        }
    }
    @keyframes transition_slidedown{
        0% {
            opacity: 0;
            transform-origin: top;
            transform: scaleY(0);
        }
        50% {
            opacity: 1;
        }
        100%{
            transform: scaleY(1);
        }
    }
}