<html>
<head>
<style type="text/css">
html {color:black;}
p {color:blue;}
h2 {color:silver;}
</style>
</head>
<body>
<h1>这是 heading 1</h1>
<h2>这是 heading 2</h2>
<p>这是一段普通的段落。</p>
</body>
</html>