如何在此代码中增加菜单栏的高度，如何减小柱尺寸和高度在没有任何自定义CSS的情况下，任何人都可以为我提供丰富的CSS。在通知列中的数据应仅在那个黄色的地方显示
<!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="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css" href="newcss.css">
</head>
<body>
<nav class="navbar navbar-default navbar-fixed-top">
<div class="navbar-header"><a class="navbar-brand" href="#">Brand</a>
<a class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</a>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Home</a></li>
<li><a href="#">Link</a></li>
<li><a href="#">More</a></li>
<li><a href="#">Options</a></li>
</ul>
</div>
</nav>
<!-- Begin page content -->
<div class="container-fluid">
<div class="row">
<div class="col-md-2 sidebar" id="side1">Links</div>
<div class="col-md-8">
<div class="page-header">
<h1>Student Management System</h1>
</div>
<p class="lead">Home Page.</p>
</div>
<div class="col-md-2 sidebar" id="side2">notice</div>
</div>
</div>
<div id="footer">
<div class="container">
<p class="text-muted">Place sticky footer content here.</p>
</div>
</div>
</body>
</html>
我没有得到您的实际需求，但是可以通过添加以下CSS来提高menubar高度。注意：这是一个解决方法，可能不会响应
.navbar{
height : 100px !important; /*keep your own height here*/
}