@media (max-width: 480px) {
    footer {
        padding: 30px 0 ;
    }

    .footer-col:nth-of-type(2),
    .footer-col:nth-of-type(3),
    .footer-col:nth-of-type(4),
    .footer-col:nth-of-type(1) {
        flex: 0 0 100%;
    }

    .footer-bottom {
        padding: 30px 0 90px;
    }
}