.image-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: 0;
}

.image-overlay.is-active {
  opacity: 1;
}

.image-overlay__corner {
  position: absolute;
  width: 25.8rem;
  height: 25.8rem;
  user-select: none;
  -webkit-user-drag: none;
}

.image-overlay__corner--top {
  top: 0;
  left: 0;
}

.image-overlay__corner--bottom {
  bottom: 0;
  right: 0;
}

@media screen and (min-width: 750px) {
  .image-overlay__corner {
    width: 55rem;
    height: 55rem;
  }
}