HTML-CSS: Bouncing loader

HTML-CSS : Exercise-13 with Solution

Using HTML, CSS create a bouncing loader animation.

  • Use @keyframes to define a bouncing animation, using the opacity and transform properties. Use a single axis translation on transform: translate3d() to achieve better animation performance.
  • Create a parent container, .bouncing-loader, for the bouncing circles. Use display: flex and justify-content: center to position them in the center.
  • Give the three bouncing circle <div> elements the same width and height and border-radius: 50% to make them circular.
  • Apply the bouncing-loader animation to each of the three bouncing circles.
  • Use a different animation-delay for each circle and animation-direction: alternate to create the appropriate effect.

HTML Code:

<!--License: https://bit.ly/3GjrtVF-->
<!DOCTYPE html>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Using HTML, CSS create a bouncing loader animation</title>
<div class="bouncing-loader">
  <div> w</div>
  <div> 3</div>
  <div> r</div>
  <div> e</div>
  <div> s</div>
  <div> o</div>
  <div> u</div>
  <div> r</div>
  <div> c</div>
  <div> e</div>

CSS Code:

@keyframes bouncing-loader {
  to {
    opacity: 0.1;
    transform: translate3d(0, -16px, 0);

.bouncing-loader {
  display: flex;
  justify-content: center;

.bouncing-loader > div {
  width: 16px;
  height: 16px;
  margin: 3rem 0.2rem;
  background: #8385aa;
  border-radius: 50%;
  text: center;
  animation: bouncing-loader 0.6s infinite alternate;

.bouncing-loader > div:nth-child(2) {
  animation-delay: 0.2s;

.bouncing-loader > div:nth-child(3) {
  animation-delay: 0.4s;
.bouncing-loader > div:nth-child(4) {
  animation-delay: 0.6s;
.bouncing-loader > div:nth-child(5) {
  animation-delay: 0.8s;
.bouncing-loader > div:nth-child(6) {
  animation-delay: 0.10s;
.bouncing-loader > div:nth-child(7) {
  animation-delay: 0.2s;
.bouncing-loader > div:nth-child(8) {
  animation-delay: 0.4s;
.bouncing-loader > div:nth-child(9) {
  animation-delay: 0.5s;

HTML-CSS Editor:

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

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

HTML-CSS: Tips of the Day

How can I show dots ("...") in a span with hidden overflow?

For this you can use text-overflow: ellipsis; property. Write like this

span {
    display: inline-block;
    width: 180px;
    white-space: nowrap;
    overflow: hidden !important;
    text-overflow: ellipsis;
<span>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book</span>

Ref: https://bit.ly/2RqEbdh