使用Bootstrap将导航栏修复到顶部
将导航栏固定在顶部，将类.navbar-fixed-top添加到.navbar类。
您可以尝试运行以下代码将导航栏修复到顶部
示例
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<link href = "/bootstrap/css/bootstrap.min.css" rel = "stylesheet">
<script src = "/scripts/jquery.min.js"></script>
<script src = "/bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
<nav class = "navbar navbar-default navbar-fixed-top" role = "navigation" style="background: red;">
<div class = "navbar-header">
<a class = "navbar-brand" href = "#">Modes of Transport</a>
</div>
<div>
<ul class = "nav navbar-nav">
<li class = "active"><a href = "#">Air Transport</a></li>
<li><a href = "#">Water Transport</a></li>
</ul>
</div>
</nav>
</body>
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