<!DOCTYPE html>
<html>
<head>
<style>
#div1 {
position: relative;
margin: auto;
height: 150px;
width: 250px;
padding: 10px;
border: 1px solid black;
animation: mymove 5s infinite;
perspective: 200px;
}
@keyframes mymove {
50% {perspective: 100px;}
}
#div2 {
padding: 50px;
position: absolute;
border: 1px solid black;
background-color: red;
transform: rotateX(45deg);
}
</style>
</head>
<body>
<h1>Animation of perspective</h1>
<div id="div1">DIV1
<div id="div2">Think that you are looking down on a wall. See what happens when you gradually change the perspective!</div>
</div>
</body>
</html>