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<!DOCTYPE html> <html> <head> <style> .button { border: none; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; } .button1 {background-color: #4CAF50;} /* Green */ .button2 {background-color: #008CBA;} /* Blue */ </style> </head> <body> <h1>button 元素 - 使用 CSS 设置样式</h1> <p>使用 background-color 属性更改按钮的背景颜色：</p> <button class="button button1">绿色</button> <button class="button button2">蓝色</button> </body> </html>