/* Back to Top Button CSS */
#toTop {
    display: none;
    background-color: #15509E;
    color: #fff;
    font-weight: 600;
    font-size: 150%;
    opacity: 0.4;
    position: fixed;
    align-items: center;
    padding-top: .3em;
    border-radius: 3px;
    cursor:pointer;
    bottom: .35em;
    right: .5em;
    width: 1.5em;
    height: 1.2em;
    z-index: 999;
}
#toTop:hover {
    opacity: 0.7;
}