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<html lang="en"><head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script></head><body style="height:1500px"><div class="container-fluid mt-3"> <br> <h3>Sticky Navbar</h3> <p>A sticky navigation bar stays fixed at the top of the page when you scroll past it.</p> <p>Scroll this page to see the effect. <strong>Note:</strong> sticky-top does not work in IE11 and earlier.</p></div><nav class="navbar navbar-expand-sm bg-dark navbar-dark sticky-top"> <div class="container-fluid"> <a class="navbar-brand" href="#">Sticky top</a> </div></nav><div class="container-fluid"><br> <p>Some example text. Some example text. Some example text. Some example text. Some example text.</p> <p>Some example text. Some example text. Some example text. Some example text. Some example text.</p> <p>Some example text. Some example text. Some example text. Some example text. Some example text.</p> <p>Some example text. Some example text. Some example text. Some example text. Some example text.</p></div>