.footer-back {
    width: 100%;
    margin-top: -2.5rem;
    background-color: #151515;
    z-index: -1;
}
#footer {
    background: #212121;
    list-style: none;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.12);
}