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源代码
在线运行
<!DOCTYPE html> <html> <head> <title>Bootstrap 实例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.1.0/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.12.5/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.1.0/js/bootstrap.min.js"></script> </head> <body style="height:1500px"> <nav class="navbar navbar-expand-sm bg-dark navbar-dark fixed-top"> <a class="navbar-brand" href="#">Logo</a> <ul class="navbar-nav"> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Link</a> </li> </ul> </nav> <div class="container-fluid" style="margin-top:80px"> <h3>固定导航栏</h3> <p>导航栏可以固定在头部或者底部。</p> <h1>滚动页面查看效果。</h1> </div> </body> </html>
动行结果
