<!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="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h1>Padding Top Utilities</h1>
<p>Padding top utilities:</p>
<div class="pt-0 bg-warning">Padding Top 0</div>
<div class="pt-1 bg-success">Padding Top 1</div>
<div class="pt-2 bg-danger">Padding Top 2</div>
<div class="pt-3 bg-primary">Padding Top 3</div>
<div class="pt-4 bg-light">Padding Top 4</div>
<div class="pt-5 bg-info">Padding Top 5</div>
<br>
<p>Responsive padding top utilities. Resize the browser window to see the effect:</p>
<div class="pt-sm-5 bg-warning">Padding Top 5 on SM screens</div>
<div class="pt-md-5 bg-success">Padding Top 5 on MD screens</div>
<div class="pt-lg-5 bg-danger">Padding Top 5 on LG screens</div>