​x
 
<!DOCTYPE html>
<html>
<head>
<style>
#div1
{
position: relative;
height: 200px;
width: 200px;
margin: 100px;
padding:10px;
border: 1px solid black;
}
​
#div2
{
padding:50px;
position: absolute;
border: 1px solid black;
background-color: yellow;
transform: rotate(45deg);
transform-origin:20% 40%;
-ms-transform: rotate(45deg); /* IE 9 */
-ms-transform-origin:20% 40%; /* IE 9 */
-webkit-transform: rotate(45deg); /* Safari and Chrome */
-webkit-transform-origin:20% 40%; /* Safari and Chrome */
-moz-transform: rotate(45deg); /* Firefox */
-moz-transform-origin:20% 40%; /* Firefox */
-o-transform: rotate(45deg); /* Opera */
-o-transform-origin:20% 40%; /* Opera */
}
</style>
</head>
​
<body>
​
<div id="div1">
  <div id="div2">HELLO</div>
</div>
​
</body>
</html>
​