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源代码：
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>安科教程(www.ancii.com)</title> <style> h1 {font-size:40px;} h2 {font-size:30px;} p {font-size:14px;} </style> </head> <body> <h1>This is heading 1</h1> <h2>This is heading 2</h2> <p>This is a paragraph.</p> <p>Specifying the font-size in px allows Internet Explorer 9, Firefox, Chrome, Opera, and Safari to resize the text.</p> <p><b>Note:</b> This example does not work in IE, prior version 9.</p> </body> </html>
运行结果
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