/* Reveal the gallery backdrop between Sinfonia’s two panels. */
img[src$="/mare-2.webp"] {
  --sinfonia-gap-mask: linear-gradient(
    to right,
    #000 49.2958%,
    transparent 49.2958% 51.3444%,
    #000 51.3444%
  );
  -webkit-mask-image: var(--sinfonia-gap-mask);
  mask-image: var(--sinfonia-gap-mask);
}