<!DOCTYPE html>
<html>
<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.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
<style>
#demo { position: absolute;
top: 250px;
font-size: 40px;
}
#myScrollspy { position: relative;
top: 50px;
height: 200px;
overflow: auto;
font-size: 28px;
}
#section1 {color: #fff; background-color: #1E88E5;} #section2 {color: #fff; background-color: #673ab7;} #section3 {color: #fff; background-color: #ff9800;} #section4 {color: #fff; background-color: #555555;} </style>
</head>
