.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    margin-bottom: 1rem;
}

/* narrower than 600px */
@media (max-width: 600px) {
    .media-grid {
        grid-template-columns: 1fr;
    }
}