footer {
    display: flex;
    align-items: center;
    background-color: #fff;
    min-height: 100px;
    box-shadow: 0 0 10px rgba(0, 0, 0, .1);
}

footer .copyright {
    padding: 0 20px;
}

footer .copyright a {
    text-decoration: none;
}

@media only screen and (max-width: 640px) {
    footer {
        display: none;
    }
}