Check out example codes for "how to change the size of something on hover in css". It will help you in understanding the concepts better.

Code Example 1

.zoom {
  padding: 50px;
  background-color: green;
  transition: transform .2s; /* Animation */
  width: 200px;
  height: 200px;
  margin: 0 auto;
}

.zoom:hover {
  transform: scale(1.5); /* (150% zoom - Note: if the zoom is too large, it will go outside of the viewport) */
}

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