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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> <style> a:hover { background-color:yellow; } </style> </head> <body> <a href="http://www.w3big.com/">w3big.com</a> <a href="http://www.wikipedia.org">wikipedia.org</a> <p><b>注意:</b> 当鼠标移动到连接上 :hover选择器样式链接到该超练级.</p> </body> </html>