#zoom-box {
  max-width: 800px;
  max-height: 600px;
  height: auto;
  position: relative;
  margin: 10px auto;
}

#zoomed-image {
  width: 100%;
  height: auto;
}

#zoom-box:hover, #zoom-box:active {
  cursor: zoom-in;
  display: block;
}

#zoom-box:hover #magnifier, #zoom-box:active #magnifier {
  opacity: 1;
}

#magnifier {
  max-width: 70px;
  max-height: 70px;
  height: 70px;
  width: 70px;
  box-shadow: 0 5px 10px -2px rgba(0,0,0,0.3);
  pointer-events: none;
  position: absolute;
  opacity: 0;
  border: 1px solid whitesmoke;
  z-index: 99;
  border-radius: 100%;
  display: block;
  transition: opacity .2s;
  transform: scale(5);
}