<!DOCTYPE html>
<html>
<head>
<style>
#myDIV {
width: 300px;
height: 200px;
outline: 1px solid black;
-webkit-animation: mymove 5s infinite; /* Chrome, Safari, Opera */
animation: mymove 5s infinite;
}
/* Chrome, Safari, Opera */
@-webkit-keyframes mymove {
50% {outline: 15px solid lightblue;}
}
/* Standard syntax */
@keyframes mymove {
50% {outline: 15px solid lightblue;}
}
</style>
</head>
<body>
<p>Gradually change the outline property:<p>
<div id="myDIV"></div>
<p>The outline property is a shorthand property for all outline properties.</p>
<p>See the individual outline properties to see which is <em>animatable</em>.</p>
<p><strong>Note:</strong> CSS Animations do not work in Internet Explorer 9 and earlier versions.</p>
</body>
</html>