.image-gallery {
    display: flex;
    flex-wrap: wrap;
    max-width: 90%;
    margin: 0 auto;
    padding: 0;
}

.image-item {
    break-inside: avoid;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    margin-bottom: 0;
}

.image-item.visible {
    opacity: 1;
}

.image-item img {
    display: block;
    margin: 0;
}

.displayed-image {
    width: 100%;
    height: auto;
    border-inline: 10px solid white;
    border-block: 4px solid white;  
}