.element-absolute-navigation {
    z-index: -1;
    opacity: 0;
    position: fixed;
    top: 40vh;
    left: 0;
    width: 100vw;
    -webkit-transition: opacity, top 0.5s !important;
    transition: opacity, top 0.5s !important;
}

.element-absolute-navigation.active {
    top: 0;
    z-index: 999;
    opacity: 1;
    overflow-y: auto;
    height: 100vh;
}