.a {
width: 150px;
height: 80px;
background-color: yellow;
-ms-transform: rotate(22deg); /* IE 9 */
transform: rotate(20deg);
}
<!-- language: lang-html -->
<html>
<head>
</head>
<body>
<h1>The transform Property</h1>
<h2>transform: rotate(20deg):</h2>
<div class="a">Hello World!</div>
</body>
</html>
In the css -ms-transform:rotate(20deg) cant any change in the code . But in the examples it is used to code. What is the use of that line in css