/* Finished reader-facing images only: the image pixels stay untouched. */
.watercolour-frame {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: inherit;
  isolation: isolate;
}

.watercolour-frame img {
  position: relative;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
}