.widget.mobile-footer {
    display: block;
    padding: 20px 0;
    background-color: white;
}

.widget.mobile-footer .container {
    margin: 20px 0;
    padding: 20px;
    border-top: 1px solid grey;
    border-bottom: 1px solid grey;
}

@media only screen and (min-width: 640px) { 
    .widget.mobile-footer {
        display: none;
    }
}