<!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="/lib/bootstrap.min.css">
<script src="/lib/jquery-1.12.2.min.js"></script>
<script src="/lib/bootstrap.min.js"></script>
<style>
body {
position: relative;
}
ul.nav-pills {
top: 20px;
position: fixed;
}
div.col-sm-9 div {
height: 250px;
font-size: 28px;
}
#section1 {color: #fff; background-color: #1E88E5;}
#section2 {color: #fff; background-color: #673ab7;}
#section3 {color: #fff; background-color: #ff9800;}
#section41 {color: #fff; background-color: #00bcd4;}
#section42 {color: #fff; background-color: #009688;}
@media screen and (max-width: 810px) {
#section1, #section2, #section3, #section41, #section42 {
margin-left: 150px;
}
}
</style>
</head>
<body data-spy="scroll" data-target="#myScrollspy" data-offset="20">
<div class="container">
<div class="row">
<nav class="col-sm-3" id="myScrollspy">
<ul class="nav nav-pills nav-stacked">
<li class="active"><a href="#section1">Section 1</a></li>
<li><a href="#section2">Section 2</a></li>
<li><a href="#section3">Section 3</a></li>
<li class="dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#">Section 4 <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#section41">Section 4-1</a></li>
<li><a href="#section42">Section 4-2</a></li>
</ul>
</li>
</ul>
</nav>
<div class="col-sm-9">
<div id="section1">
<h1>Section 1</h1>
<p>Try to scroll this section and look at the navigation list while scrolling!</p>
</div>
<div id="section2">
<h1>Section 2</h1>
<p>Try to scroll this section and look at the navigation list while scrolling!</p>
</div>
<div id="section3">
<h1>Section 3</h1>
<p>Try to scroll this section and look at the navigation list while scrolling!</p>
</div>
<div id="section41">
<h1>Section 4-1</h1>
<p>Try to scroll this section and look at the navigation list while scrolling!</p>
</div>
<div id="section42">
<h1>Section 4-2</h1>
<p>Try to scroll this section and look at the navigation list while scrolling!</p>
</div>
</div>
</div>
</div>
</body>
</html>