.rt-sub-menu {
    position: absolute;
    visibility: hidden;
    opacity: 0;
    background: #fff;
}

.rt-mega-menu {
    visibility: hidden;
    opacity: 0;
    z-index: 2;
    position: absolute;
    background: #fff;
}

.rt-mega-menu .rt-sub-menu {
    position: static;
    visibility: hidden;
    opacity: 0;
}

.rt-mega-menu-row {
    display: table;
    table-layout: fixed;
    width: 100%;
    margin: 0;
    padding: 0;
    list-style: none;
}

.rt-mega-menu-col {
    display: table-cell;
}

li.rt-mega-menu-open>.rt-sub-menu,
li.rt-mega-menu-open>.rt-mega-menu,
li.rt-mega-menu-open>.rt-mega-menu .rt-sub-menu {
    height: auto;
    visibility: visible;
    opacity: 1;
}

.rt-mega-menu-full-width {
    position: static;
}

.rt-mega-menu-full-width .rt-mega-menu {
    left: 0;
    right: 0;
}

.rt-mega-menu-tabs {
    margin: 0;
    padding: 0;
    list-style: none;
    background: #eee;
}

.rt-mega-menu-tabs .rt-mega-menu-tab {
    position: static;
    width: 100%;
}

.rt-mega-menu-tabs .rt-mega-menu-tab>a {
    width: 20%;
    color: #333;
}

.rt-mega-menu-tabs .rt-mega-menu-tab .rt-mega-menu-tab-content {
    position: absolute;
    top: 0;
    left: 20%;
    display: none;
}

.rt-mega-menu-tabs .rt-mega-menu-tab-open .rt-mega-menu-tab-content {
    display: block;
    width: 80%;
    background: #fff;
}

.rt-mega-menu-tabs .rt-mega-menu-tab-content>.rt-sub-menu>li {
    position: static;
}


/* slide transfrom */

.rt-mega-menu-transition-slide>.rt-mega-menu-open>.rt-mega-menu,
.rt-mega-menu-transition-slide>.rt-mega-menu-open>.rt-sub-menu {
    visibility: visible;
    opacity: 1;
    transform: translate(0, 0);
    -webkit-transform: translate(0, 0);
    transition: all 0.3s;
    -webkit-transition: all 0.3s;
}

.rt-mega-menu-transition-slide>li>.rt-mega-menu,
.rt-mega-menu-transition-slide>li>.rt-sub-menu {
    visibility: hidden;
    opacity: 0;
    transform: translate(0, 10%);
    -webkit-transform: translate(0, 10%);
    transition: all 0.3s;
    -webkit-transition: all 0.3s;
}


/* elastic transform */

.rt-mega-menu-transition-elastic>.rt-mega-menu-open>.rt-mega-menu,
.rt-mega-menu-transition-elastic>.rt-mega-menu-open>.rt-sub-menu {
    visibility: visible;
    opacity: 1;
    transform: rotateY(0deg);
    -webkit-transform: rotateY(0deg);
    transition: all 0.3s;
    -webkit-transition: all 0.3s;
}

.rt-mega-menu-transition-elastic>li>.rt-mega-menu,
.rt-mega-menu-transition-elastic>li>.rt-sub-menu {
    visibility: hidden;
    opacity: 0;
    transform: rotateY(180deg);
    -webkit-transform: rotateY(180deg);
    transition: all 0.3s;
    -webkit-transition: all 0.3s;
}


/* scale transform */

.rt-mega-menu-transition-zoom>.rt-mega-menu-open>.rt-mega-menu,
.rt-mega-menu-transition-zoom>.rt-mega-menu-open>.rt-sub-menu {
    visibility: visible;
    opacity: 1;
    transform: scale(1, 1);
    -webkit-transform: scale(1, 1);
    transition: all 0.3s;
    -webkit-transition: all 0.3s;
}

.rt-mega-menu-transition-zoom>li>.rt-mega-menu,
.rt-mega-menu-transition-zoom>li>.rt-sub-menu {
    visibility: hidden;
    opacity: 0;
    transform: scale(0.5, 0.5);
    -webkit-transform: scale(0.5, 0.5);
    transition: all 0.3s;
    -webkit-transition: all 0.3s;
}


/* transition fading */

.rt-mega-menu-transition-fading>.rt-mega-menu-open>.rt-mega-menu,
.rt-mega-menu-transition-fading>.rt-mega-menu-open>.rt-sub-menu {
    visibility: visible;
    opacity: 1;
    transition: all 1s;
}

.rt-mega-menu-transition-fading>li>.rt-mega-menu,
.rt-mega-menu-transition-fading>li>.rt-sub-menu {
    visibility: hidden;
    opacity: 0;
    transition: all 1s;
}


/* transition default */

.rt-mega-menu-transition-default>.rt-mega-menu-open>.rt-mega-menu,
.rt-mega-menu-transition-default>.rt-mega-menu-open>.rt-sub-menu {
    visibility: visible;
    opacity: 1;
}

.rt-mega-menu-transition-default>li>.rt-mega-menu,
.rt-mega-menu-transition-default>li>.rt-sub-menu {
    visibility: hidden;
    opacity: 0;
}