.lightbox-background {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
}

.lightbox-background img {
    background-color: rgba(0, 0, 0, .3);
    border: 1rem solid #0a0c59;
}

.lightbox-caption:after {
    content: ' (© Angelika Schmidt)';
}

.imagegallery-container a {
    cursor: pointer;
}