.img-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  width: 100dvw;
  height: 100%;
  height: 100dvh;
  background: rgb(255 255 255 / 77%);
  z-index: 999;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
  -webkit-overflow-scrolling: touch;
}
.img-overlay.active {
  display: flex;
}
.img-overlay img {
  max-width: 100vw;
  max-height: 100vh;
  object-fit: contain;
  pointer-events: none;
}

#flipbook,
#flipbook2 {
  background: #000;
}