footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 75%;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.2) 20%, rgba(255, 255, 255, 0.2) 80%, transparent);
}