#scrollUp {
    width: 3.25em;
    height: 3.25em;
    border-radius: 50%;
    background: #3d3d3d;
    right: 10px;
    display: none;
    text-align: center;
    position: relative;
    z-index: 4;
    /* bottom: 3.25em; */
    bottom: 10px;
    padding-top: 12px;
    transition: 0.2s ease;
    -webkit-transition: 0.2s ease;
    -moz-transition: 0.2s ease;
}

#scrollUp i {
    color: #f5f5f5;
}

#scrollUp:hover {
    transform: translate3d(0, -5px, 0);
    -webkit-transform: translate3d(0, -5px, 0);
}