.photos-gallery {
    box-sizing: border-box;
    width: calc(100% - 80px);
    margin: 0px 40px;
    height: 420px;
}

.photos-gallery .photo {
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
}

.photos-gallery .photo img {
    box-sizing: border-box;
    max-height: 100%;
    height: 100%;
    max-width: 100%;
    width: 100%;
    object-fit: scale-down;
    object-position: center;
    display: block;
}

.photos-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(4, 1fr);
    gap: 2px;
}

.photos-gallery[data-multi="1"] .photo {
    grid-column: span 4;
    grid-row: span 4;
}

.photos-gallery[data-multi="2"] .photo {
    grid-column: span 2;
    grid-row: span 4;
}

.photos-gallery[data-multi="3"] .photo:nth-child(1) {
    grid-column: span 2;
    grid-row: span 4;
}

.photos-gallery[data-multi="3"] .photo:nth-child(2),
.photos-gallery[data-multi="3"] .photo:nth-child(3) {
    grid-column: span 2;
    grid-row: span 2;
}

.photos-gallery[data-multi="4"] .photo {
    grid-column: span 2;
    grid-row: span 2;
}

.photos-gallery[data-multi="5"] .photo:nth-child(1) {
    grid-column: span 2;
    grid-row: span 4;
}

.photos-gallery[data-multi="5"] .photo:nth-child(2),
.photos-gallery[data-multi="5"] .photo:nth-child(3),
.photos-gallery[data-multi="5"] .photo:nth-child(4),
.photos-gallery[data-multi="5"] .photo:nth-child(5) {
    grid-column: span 1;
    grid-row: span 2;
}


/* Ẩn hình thứ 5 trở đi */
.photos-gallery[data-multi="5"] .photo:nth-child(n+6) {
    display: none;
}