.collaboration-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.collaboration-item img {
    width: 85%;
    height: auto;
    display: block;
}

.collaboration-item.rowspan-2 {
    grid-row: span 2;
}

@media (max-width: 767px) {
    .collaboration-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .collaboration-item.rowspan-2 {
        grid-row: span 2;
    }
}