border-top-width - HTML CSS CSS Animatable Property

HTML CSS examples for CSS Animatable Property:border-top-width


In the following code the width of the top border of the div element is animating from its initial value "2px" to "20px", and back to the initial value "2px" again up to infinite times.

-webkit- prefix is for Chrome, Safari, Opera.

-moz- prefix is for Firefox.

Demo Code

ResultView the demo in separate window

<!DOCTYPE html>
<html lang="en">
  <title>Example of CSS border-top-width Property Animation</title>
  <style type="text/css">
.animated {<!--from w  ww  .  j  av a  2s  .c  o m-->
  width: 300px;
  padding: 40px 0;
  font: bold 50px sans-serif;
  text-align: center;
    background: #EEEEEE;
    border: 2px solid red;
    -webkit-animation: test 4s infinite; 
    animation: test 4s infinite;

@-webkit-keyframes test {
    50% {border-top-width: 20px;}

@keyframes test {
    50% {border-top-width: 20px;}

  <p> </p>
  <div class="animated">

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