.payment-icons {
    max-width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.payment-icons > div { display: flex; }
.payment-icons img, .payment-icons a { height: 50px; }
@media (min-width: 1200px) {
    .payment-icons { flex-direction: row; }
}