菜鸟学堂
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源代码
<!DOCTYPE html> <html> <head> <style> #firstname { background-color:yellow; } </style> </head> <body> <h1>Welcome to My Homepage</h1> <div class="intro"> <p id="firstname">My name is Donald.</p> <p id="hometown">I live in Duckburg.</p> </div> <p>My best friend is Mickey.</p> </body> </html>
运行结果
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菜鸟学堂 edu.jb51.net