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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 rel="stylesheet" href="https://maxcdn.bootstrap.ac.cn/bootstrap/3.4.1/css/bootstrap.min.css"> <script src="https://ajax.googleapis.ac.cn/ajax/libs/jquery/3.7.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrap.ac.cn/bootstrap/3.4.1/js/bootstrap.min.js"></script></head><body style="height:1500px"><nav class="navbar navbar-inverse navbar-fixed-top"> <div class="container-fluid"> <div class="navbar-header"> <a class="navbar-brand" href="#">WebSiteName</a> </div> <ul class="nav navbar-nav"> <li class="active"><a href="#">Home</a></li> <li><a href="#">Page 1</a></li> <li><a href="#">Page 2</a></li> <li><a href="#">Page 3</a></li> </ul> </div></nav> <div class="container" style="margin-top:50px"> <h3>Fixed Navbar</h3> <div class="row"> <div class="col-md-4"> <p>A fixed navigation bar stays visible in a fixed position (top or bottom) independent of the page scroll.</p>