为什么我的css样式不加载
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>创建文本节点</title>
<style type="text/css">
.message{
width:200px;
height:100px;
background-color:#CCC;
}
</style>
</head>
<body>
<script type="text/javascript">
var pNode = document.createElement("p");
pNode.className = "message";
var pNodeText = document.createTextNode("I Love Javascript!");
pNode.appendChild(pNodeText);
document.body.appendChild(pNode);
</script>
</body>
</html>
