代码示例:(标识:bs_navbar_vertical)
<!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.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/js/bootstrap.bundle.js"></script>
</head>
<body>

<nav class="navbar bg-light">
  <div class="container-fluid">
    <ul class="navbar-nav">
      <li class="nav-item">
        <a class="nav-link" href="#">链接 1</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">链接 2</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">链接 3</a>
      </li>
    </ul>
  </div>
</nav>

<div class="container-fluid mt-3">
  <h3>垂直导航栏</h3>
  <p>导航栏是位于页面顶部的导航标题。</p>
</div>

</body>
</html>
运行结果: