body {
  overflow: hidden;
  margin: 0;
  background: #000;
}

#main-img {
  display: block;
  margin: 20px auto;
  border: 0px solid rgba(255, 255, 255, 0.2);
  -webkit-filter: grayscale(0);
          filter: grayscale(0);
}

#zoom-img {
  pointer-events: none;
  position: relative;
  top: 50%;
  left: 50%;
}

#zoom {
  position: absolute;
  width: 250px;
  height: 250px;
  box-shadow: 0 0 0 2px rgba(255, 0, 0, 0.5), 5px 5px 10px 5px rgba(0, 0, 0, 0.2);
  border-radius: 50%;
  top: 0;
  left: 0;
  overflow: hidden;
  pointer-events: none;
  visibility: hidden;
  opacity: 0;
}