下述代码可直接保存为.html文件运行
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="ch">
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link href="main.css" rel="stylesheet" type="text/css">
<title>第一个网页</title></head>
<body><div> <p>hello!</p></div></body>
</html>
