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<html> <head> <style> body{ text-align:center; } a { color: red; } a:hover { color: green; } a:active { color: cyan; } </style> </head> <body> <h1>将鼠标移到下面的链接上以查看悬停效果。</h1> <a class = "link" href = https://www.rocschool.com/tutorial/rocschool-show-434.html>CSS Grid</a> </body> </html>