<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
div{
width: 100px;
height: 100px;
border: 1px solid #000;
line-height: 6;
text-align: center;
margin-bottom: 20px;
}
@-webkit-keyframes myAnimation {
from {border-radius: 0%;}
to {border-radius: 50%;}
}
@keyframes myAnimation {
from {border-radius: 0%;}
to {border-radius: 50%;}
}
</style>
</head>
<body>
<h1>CSS animation-name Property</h1>
<div>
Div
</div>
<button onclick="myFunction()">Click Me</button>
<script>
var x = document.getElementsByTagName("div")[0];
function myFunction(){
x.style.animationName = "myAnimation";
x.style.WebkitAnimationName = "myAnimation";
x.style.animationDuration = "2s";
x.style.WebkitAnimationDuration = "2s";
}
</script>
<p><strong>Note</strong>: Click on the button to start the animation for 2s.</p> </body>
</html>