html {
    --vcms-gallery-height: 50vh;
}

.img-gallery .gallery-img-stack img {
    height: calc(var(--vcms-gallery-height) / 2 - 0.75rem);
    width: 100%;
    object-fit: cover;
}

.img-gallery .gallery-img-prominent {
    height: var(--vcms-gallery-height);
    object-fit: cover;
    width: 100%;
}