.two-column {
    display: grid;
    grid-template-columns: minmax(min-content, 1fr) minmax(min-content, 1fr);
    gap: 10px 100px;
}

@container setup (width < 800px) {
    .two-column {
        grid-template-columns: minmax(min-content, 1fr);
    }

        .two-column > * {
            grid-template-columns: minmax(min-content, 1fr);
            width: 100%;
        }
}