/* Use the full screen without stretching or cropping; only the image is in the
   fullscreen top layer. Black letterboxing contains no app controls or labels. */
#image.image-fullscreen-target:fullscreen {
  display: block !important;
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  min-width: 0;
  min-height: 0;
  max-width: 100vw;
  max-height: 100vh;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  outline: none;
  box-shadow: none;
  background: #000;
  object-fit: contain;
  opacity: 1;
  transform: none;
  transition: none;
  cursor: none;
}
#image.image-fullscreen-target::backdrop { background: #000; }