.img-fluid {
    display: none !important;
}

footer.main-footer .main-footer__block > .col-md-8 {
    flex: 0 0 100% !important;
    max-width: 100% !important;
    width: 100% !important;
    border-top: 1px solid #686868;
    margin-top: 40px;   /* optional spacing from content */
    padding-top: 30px;  /* space inside footer after the line */
}