为什么我这段代码在浏览器中没反应啊，也没有旋转啊，Why?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style>
#wrap{
-webkit-perspective:800px;
-webkit-perspective-origin:50% 50%;
-webkit-transfrom-style:-webkit-preserve-3d;
}
#main{
width:500px;
height:500px;
background:blue;
margin:100px auto;
-webkit-transfrom:rotateX(45deg);
}
</style>
</head>
<body>
<div id="wrap">
<div id="main"></div>
</div>
</body>
</html>
