مشاهده و تمرین روی کد ها

<!DOCTYPE html>
<html>
<head>
<style> 
.div {
    width: 100px;
    height: 100px;
    background-color: red;
    position: relative;
    -webkit-animation-name: example; /* Safari 4.0 - 8.0 */
    -webkit-animation-duration: 4s; /* Safari 4.0 - 8.0 */
    -webkit-animation-iteration-count: 2; /* Safari 4.0 - 8.0 */
    -webkit-animation-direction: alternate; /* Safari 4.0 - 8.0 */
    animation-name: example;
    animation-duration: 4s;
    animation-iteration-count: 2;
    animation-direction: alternate;    
}

/* Safari 4.0 - 8.0 */
@-webkit-keyframes example {
    0%   {background-color:red; left:0px; top:0px;}
    25%  {background-color:yellow; left:200px; top:0px;}
    50%  {background-color:blue; left:200px; top:200px;}
    75%  {background-color:green; left:0px; top:200px;}
    100% {background-color:red; left:0px; top:0px;}
}

/* Standard syntax */
@keyframes example {
    0%   {background-color:red; left:0px; top:0px;}
    25%  {background-color:yellow; left:200px; top:0px;}
    50%  {background-color:blue; left:200px; top:200px;}
    75%  {background-color:green; left:0px; top:200px;}
    100% {background-color:red; left:0px; top:0px;}
}
</style>
</head>
<body>

<p><b>Note:</b> This example does not work in Internet Explorer 9 and earlier versions.</p>

<div class="div"></div>

</body>
</html>

جهت معکوس