WordPress default gallery styling

wp-default-gallery.css

/* General gallery container styling */
.gallery {
    display: grid;
    gap: 10px;
    margin: 20px 0;
    list-style: none;
    padding: 0;
}

/* Columns based on gallery-classes */
.gallery-columns-1 {
    grid-template-columns: 1fr;
}

.gallery-columns-2 {
    grid-template-columns: repeat(2, 1fr);
}

.gallery-columns-3 {
    grid-template-columns: repeat(3, 1fr);
}

.gallery-columns-4 {
    grid-template-columns: repeat(4, 1fr);
}

.gallery-columns-5 {
    grid-template-columns: repeat(5, 1fr);
}

.gallery-columns-6 {
    grid-template-columns: repeat(6, 1fr);
}

/* Gallery items */
.gallery-item {
    display: flex;
    justify-content: center;
    align-items: center;
}

.gallery-icon {
    width: 100%;
    height: auto;
    overflow: hidden;
}

/* Image styling */
.gallery-icon img {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform 0.3s ease;
}

/* Hover effect */
.gallery-icon img:hover {
    transform: scale(1.05);
}

/* Responsive fallback for small screens */
@media (max-width: 768px) {
    .gallery-columns-2,
    .gallery-columns-3,
    .gallery-columns-4,
    .gallery-columns-5,
    .gallery-columns-6 {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .gallery-columns-2,
    .gallery-columns-3,
    .gallery-columns-4,
    .gallery-columns-5,
    .gallery-columns-6 {
        grid-template-columns: 1fr;
    }
}