.md-footer__link--next,
.md-footer__link--prev
{
    position: relative;
    background-color: #00000088;
}

.md-footer__link:hover {
    opacity: 1 !important;
    background-color: #000000aa;
}

.md-footer__button {
    position: relative;
    transition: left 0.125s;
    left: 0;
    right: 0;
}

.md-footer__link--next:hover .md-footer__button {
    left: 4px;
}

.md-footer__link--prev:hover .md-footer__button {
    left: -4px;
}