.zoom {
  padding: 5px;
  background-color: #E5E4E6;
  transition: transform .2s; /* Animation */
  width: 50px;
  height: 50px;
  margin: 0 auto;
}

.zoom:hover {
  transform: scale(.9); /* (150% zoom - Note: if the zoom is too large, it will go outside of the viewport) */
  cursor: pointer;
}