We would like to know how to create CSS3 animation on width.
<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
#demo {<!-- w w w .j a va 2 s.c om-->
width: 100px;
height: 100px;
background: red;
transition: width 1s;
-moz-transition: width 1s; /* Firefox 4 */
-webkit-transition: width 1s; /* Safari and Chrome */
-o-transition: width 1s; /* Opera */
}
#demo:hover {
width: 300px;
}
</style>
</head>
<body>
<div id="demo"></div>
</body>
</html>
The code above is rendered as follows: