<style>
* {
  box-sizing: border-box;
}
.zoom {
  padding: 1px;
  transition: transform 1s;
  width: 200px;
  height: 200px;
  margin: 0 auto;
}

.zoom:hover {
  -ms-transform: scale(1.4); /* IE 9 */
  -webkit-transform: scale(1.4); /* Safari 3-8 */
  transform: scale(1.4); 
}
</style>