安科网
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> p { background-color:yellow; } p.padding { padding:25px 50px; } </style> </head> <body> <p>This is a paragraph with no specified padding.</p> <p class="padding">This is a paragraph with specified paddings.</p> </body> </html>
运行结果
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