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<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <style> * { box-sizing: border-box; } ul.list-group { list-style-type: none; padding: 0; margin: 0; } ul.list-group li { border: 1px solid #ddd; margin-top: -1px; /* 防止重复边框 */ background-color: #f6f6f6; padding: 12px; } ul.list-group .badge { background-color: red; color: #fff; font-weight: bold; border-radius: 50%; padding: 5px 10px; text-align: center; margin-left: 5px; } </style> </head> <body> <h2>带徽章的列表组</h2> <p>为列表组添加徽章：</p> <ul class="list-group"> <li>收件箱 <span class="badge">2</span></li> <li>其他 <span class="badge">5</span></li> <li>已保存</li> <li>物品</li> <li>旧邮件</li> </ul> </body> </html>