我正在try 使用Bootstrap设置汉堡包菜单.我判断了我的代码，添加了css和js文件，但菜单不起作用，也就是没有展开.我使用了Bootstrap网站上的示例代码.如能提供任何帮助来解决这一问题，我们将不胜感激.
Html:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>IDS PANEL CONFIG</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-T3c6CoIi6uLrA9TneNEoa7RxnatzjcDSCmG1MXxSR1GAsXEV/Dwwykc2MPK8M2HN" crossorigin="anonymous">
</head>
<body>
<div class="pos-f-t m-3">
<div class="collapse" id="navbarToggleExternalContent">
<div class="bg p-4">
<h5 class="text-white h4">Collapsed content</h5>
<span class="text-muted">Toggleable via the navbar brand.</span>
</div>
</div>
<nav class="navbar navbar bg">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarToggleExternalContent" aria-controls="navbarToggleExternalContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
</nav>
<div>
<h1 style="font-size:50px;">CONFIG</h1>
<p style="font-size:50px;color: crimson;">Zone report</p>
<p><strong> please wait...</strong></p>
</div>
</div>
<div class = "container"></div>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"
integrity="sha384-C6RzsynM9kWDrMNeT87bh95OGNyZPhcTNXj1NW7RuBCsyN/o0jlpcV8Qyq46cDfL" crossorigin="anonymous"></script>
</body>
</html>