.trans_3D {
    @include transform-dual(perspective(400) 50%, rotate3d(1, 0, 0, -90deg) 0);
    @extend %transitionAll300;
    z-index: #{$zindex-dropdown};
    &.active {
        @include transform-dual(perspective(400), rotate3d(0, 0, 0, 0));
    }
}