<html>
<head>
<style>
#myDIV {
position: absolute;
width: 100px;
height: 100px;
background-color: coral;
color: white;
bottom: 0px;
animation: mymove 5s infinite;
}
@keyframes mymove {
50% {bottom: 300px;}
}
</style>
</head>
<body>
<h1>Animation of bottom property</h1>
<p>Gradually change the bottom property from 0px to 300px, then back:<p>
<div id="myDIV">
<h1>myDIV</h1>
</div>
</body>
</html>