ลองตัวเอง - CSS Reference js

<!DOCTYPE html>
<html>
<head>
<style> 
div {
    width: 100px;
    height: 100px;
    background: red;
    color: white;
    -webkit-animation: mymove 2s infinite linear alternate; /* Chrome, Safari, Opera */
    animation: mymove 2s infinite linear alternate;
}

/* Chrome, Safari, Opera */
@-webkit-keyframes mymove {
    to {-webkit-transform: rotateY(180deg);}
}

@keyframes mymove {
    to {transform: rotateY(180deg);}
}
</style>
</head>
<body>

<p>Check/uncheck the checkbox to change the backface-visibility of the animated DIV element:</p>
<div id="myDIV"><h1>Hello</h1></div>
<input type="checkbox" onclick="myFunction(this)" checked>backface-visibility

<p><strong>Note:</strong> The backface-visibility and backfaceVisibility properties are not supported in Internet Explorer 9 and earlier versions.</p>

</body>
</html>