body {
  margin: 12% 30%;
  height: 450px;
  overflow: scroll;
  font-family: Arial, sans-serif;
  color: #333;
  background: #f4f4f4;
}
#img-zoomer-box {
  width: 500px;
  height: auto;
  position: relative;
  margin-top: 10px;
}

#img-1 {
  width: 100%;
  height: auto;
}

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

#img-zoomer-box:hover #img-2, #img-zoomer-box:active #img-2 {
  opacity: 1;
}
#img-2 {
  width: 340px;
  height: 340px;
  background: url('https://images.unsplash.com/photo-1624211904722-c10788db74de?q=80&w=2340&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D') no-repeat #FFF;
  box-shadow: 0 5px 10px -2px rgba(0,0,0,0.3);
  pointer-events: none;
  position: absolute;
  opacity: 0;
  border: 4px solid whitesmoke;
  z-index: 99;
  border-radius: 100%;
  display: block;
  transition: opacity .2s;
}