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<!DOCTYPE html> <html> <head> <style> .btn-group .button { background-color: #4CAF50; /* 绿色 */ border: 1px solid green; color: white; padding: 15px 32px; text-align: center; text-decoration: none; font-size: 16px; cursor: pointer; width: 150px; display: block; } .btn-group .button:not(:last-child) { border-bottom: none; /* 阻止双边框 */ } .btn-group .button:hover { background-color: #3e8e41; } </style> </head> <body> <h1>垂直按钮分组</h1> <div class="btn-group"> <button class="button">Button</button> <button class="button">Button</button> <button class="button">Button</button> <button class="button">Button</button> </div> </body> </html>