footer {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    /*border: solid 1px black;*/
}
@media (min-width: 576px) {
}
@media (min-width: 768px) {
}
@media (min-width: 900px) {
}
@media (min-width: 992px) {
}
@media (min-width: 1200px) {
}