.contact-side-stack {
    display: grid;
    gap: 24px;
}

.contact-form .two-up {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

@media (max-width: 840px) {
    .contact-form .two-up {
        grid-template-columns: 1fr;
    }
}