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<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap 实例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.2/dist/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.2/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container mt-3"> <h2>带下拉菜单的垂直按钮组</h2> <div class="btn-group-vertical"> <button type="button" class="btn btn-primary">华为</button> <button type="button" class="btn btn-primary">大疆</button> <div class="btn-group"> <button type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown">小米</button> <ul class="dropdown-menu"> <li><a class="dropdown-item" href="#">手机</a></li> <li><a class="dropdown-item" href="#">平板电脑</a></li> </ul> </div> </div> </div> </body> </html>