.contact-page__columns {
    display: grid;
    gap: 0;
    grid-template-columns: 100%;
}

@media (min-width: 48rem) {
    .contact-page__columns {
        gap: 2em;
        grid-auto-flow: column;
        grid-auto-columns: 1fr;
        grid-template-columns: none;
    }
}