HTML-CSS: Zoom in zoom out animation

HTML-CSS : Exercise-45 with Solution

Using HTML, CSS creates a zoom in zoom out animation.

  • Use @keyframes to define a three-step animation. At the start (0%) and end (100%), the element is its original size (scale(1 ,1)). Halfway through (50%) it's scaled up to 1.5 times its original size (scale(1.5, 1.5)).
  • Use width and height to give the element a specific size.
  • Use animation to set the appropriate values for the element to make it animated.

HTML Code:

<!--License: https://bit.ly/3GjrtVF-->
<!DOCTYPE html>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Using HTML, CSS creates a zoom in zoom out animation</title>
<div class="zoom-in-out-box">w3r</div>

CSS Code:

.zoom-in-out-box {
  margin: 24px;
  width: 50px;
  height: 50px;
  background: #f500cc;
  animation: zoom-in-zoom-out 1s ease infinite;

@keyframes zoom-in-zoom-out {
  0% {
    transform: scale(1, 1);
  50% {
    transform: scale(1.5, 1.5);
  100% {
    transform: scale(1, 1);

HTML-CSS Editor:

See the Pen html-css-practical-exercises by w3resource (@w3resource) on CodePen.

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HTML-CSS: Tips of the Day

A min-height for table, tr or td:

It's not a nice solution but try it like this:


and set the divs to the min-height:

div {
    min-height: 300px;

Ref: https://bit.ly/3Ovu56J