.sq-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
    grid-auto-flow: dense;
    gap: 8px;
}

.sq-gallery .image {
    text-align: center;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.sq-gallery .big-image-left {
    grid-column: 1 / span 2;
    grid-row: span 2;
}

.sq-gallery .big-image-right {
    grid-column: 4 / span 2;
    grid-row: span 2;
}

.sq-gallery .image:after {
    content: " ";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255,255,255,0.3);
    z-index: 2;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sq-gallery .image:hover:after {
    opacity: 1;
}

.sq-gallery img {
    width: 100%;
    height: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    object-position: center center;
    box-shadow: 0px 0px 8px 0px rgba(0,0,0,0);
    transition: box-shadow 0.3s ease;
}

@media screen and (max-width: 860px) {
    .sq-gallery {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .sq-gallery .big-image-left {
        grid-column: auto;
        grid-row: auto;
    }

    .sq-gallery .big-image-right {
        grid-column: auto;
        grid-row: auto;
    }
}

@media screen and (max-width: 480px) {
    .sq-gallery {
        grid-template-columns: 1fr 1fr;
    }
}