انها محاولة لنفسك - CSS Reference anim

<!DOCTYPE html>
<html>
<head>
<style>
#div1 {
   position: relative;
   margin: auto;
   height: 150px;
   width: 250px;
   padding: 10px;
   border: 1px solid black;
   /* Chrome, Safari, Opera */
   -webkit-perspective: 200px;
   -webkit-animation: mymove 5s infinite;
   /* Standard syntax */
   animation: mymove 5s infinite;
   perspective: 200px;
}

/* Chrome, Safari, Opera */
@-webkit-keyframes mymove {
   50% {-webkit-perspective: 100px;}
}

/* Standard syntax */
@keyframes mymove {
   50% {perspective: 100px;}
}

#div2 {
   padding: 50px;
   position: absolute;
   border: 1px solid black;
   background-color: red;
   -webkit-transform: rotateX(45deg); /* Chrome, Safari, Opera */
   transform: rotateX(45deg);
}
</style>
</head>
<body>

<p>The perspective property is animatable in CSS.</p>
<p><strong>Note:</strong> CSS Animations do not work in Internet Explorer 9 and earlier versions.</p>

<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>

/* Chrome, Safari, Opera */
@-webkit-keyframes mymove {
    50% {-webkit-perspective: 100px;}
}

/* Standard syntax */
@keyframes mymove {
    50% {perspective: 100px;}
}

#div2 {
    padding: 50px;
    position: absolute;
    border: 1px solid black;
    background-color: red;
    -webkit-transform: rotateX(45deg); /* Chrome, Safari, Opera */
    transform: rotateX(45deg);
}
</style>
</head>
<body>

<p>The perspective property is animatable in CSS.</p>
<p><strong>Note:</strong> CSS Animations do not work in Internet Explorer 9 and earlier versions.</p>

<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>