源代码 ：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>开源教程(ossoft.cn)</title> <style> div>p { background-color:yellow; } </style> </head> <body> <h1>Welcome to My Homepage</h1> <div> <h2>My name is Donald</h2> <p>I live in Duckburg.</p> </div> <div> <span><p>I will not be styled.</p></span> </div> <p>My best friend is Mickey.</p> </body> </html>
运行结果