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<!DOCTYPE html> <html> <head> <style> .button { border: none; color: white; padding: 16px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; transition-duration: 0.4s; cursor: pointer; } .button1 { background-color: white; color: black; border: 2px solid #4CAF50; } .button1:hover { background-color: #4CAF50; color: white; } .button2 { background-color: white; color: black; border: 2px solid #008CBA; } .button2:hover { background-color: #008CBA; color: white; } </style> </head> <body> <h1>button 元素 - 使用 CSS 设置样式</h1> <p>当您将鼠标移到按钮上时，使用 :hover 选择器更改按钮的样式。</p> <p><strong>提示：</strong>使用 transition-duration 属性来确定“悬停”效果的速度：</p> <button class="button button1">绿色</button> <button class="button button2">蓝色</button> </body> </html>