<html>
<head>
<style>
div {
width: 100px;
height: 100px;
background: red;
position: relative;
animation: mymove infinite; /* Safari 4.0 - 8.0 */
-webkit-animation-duration: 3s; /* Safari 4.0 - 8.0 */
animation: mymove infinite;
animation-duration: 3s;
}
/* Safari 4.0 - 8.0 */
@-webkit-keyframes mymove {
from {top: 0px;}
to {top: 200px;}
}
@keyframes mymove {
from {top: 0px;}
to {top: 200px;}
}
</style>
</head>
<body>
<h1>The animation-duration Property</h1>
<p>Specify that the animation should complete one cycle in 3 seconds:</p>
<div></div>
<p><strong>Note:</strong> Always specify the animation-duration property. Otherwise the duration is 0, and the animation will not be played.</p>
<p><strong>Note:</strong> The animation-duration property is not supported in Internet Explorer 9 and earlier versions.</p>
</body>
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</html>