以下是我的代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Bootstrap</title>
<link
href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/css/bootstrap.min.css"
rel="stylesheet"
integrity="sha384-giJF6kkoqNQ00vy+HMDP7azOuL0xtbfIcaT9wjKHr8RbDVddVHyTfAAsrekwKmP1"
crossorigin="anonymous"
/>
</head>
<body>
<nav class="navbar navbar-dark bg-dark navbar-expand-md">
<a href="#" class="navbar-brand">DemoTech</a>
<button
class="navbar-toggler"
data-toggle="collapse"
data-target="#navbar"
>
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse" id="navbar" navbar>
<ul class="navbar-nav">
<li class="nav-item"><a href="#" class="nav-link">Home</a></li>
<li class="nav-item"><a href="#" class="nav-link">About</a></li>
<li class="nav-item"><a href="#" class="nav-link">Contact</a></li>
</ul>
</div>
</nav>
<script
src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/js/bootstrap.bundle.min.js"
integrity="sha384-ygbV9kiqUc6oa4msXn9868pTtWMgiQaeYH7/t7LECLbyPA2x65Kgf80OJFdroafW"
crossorigin="anonymous"
></script>
</body>
</html>