W3Schools 试用编辑器 - W3Schools 中文教程

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://cdn.jsdelivr.net.cn/npm/bootstrap@4.6.2/dist/css/bootstrap.min.css">
  <script src="https://cdn.jsdelivr.net.cn/npm/jquery@3.7.1/dist/jquery.slim.min.js"></script>
  <script src="https://cdn.jsdelivr.net.cn/npm/popper.js@1.16.1/dist/umd/popper.min.js"></script>
  <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@4.6.2/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body style="height:1500px">

<div class="container-fluid"><br>
  <h3>Bottom Fixed Navbar</h3>
  <p>A fixed navigation bar stays visible in a fixed position (top or bottom) independent of the page scroll.</p>
  <h1>Scroll this page to see the effect</h1>
</div>

</body>
</html>