#js-scroll-top {
    display: none;
    position: fixed;
    bottom: 0.5em;
    right: 2em;
    z-index: 999;
    text-align: center;
    font-size: 0.8em;
    background-color: #66a4ce!important;
}
#js-scroll-top > i {
    font-size: 4em;
}