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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>素材8网教程(study.sucai8.cn)</title> <style> p:first-child i { color:blue; } </style> </head> <body> <p>I am a <i>strong</i> man. I am a <i>strong</i> man.</p> <p>I am a <i>strong</i> man. I am a <i>strong</i> man.</p> <p><b>注意:</b> 当:first-child 作用于 IE8 及更早版本的浏览器, DOCTYPE 必须已经定义.</p> </body> </html>
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