bootstrap 5 pdf to html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Bootstrap Embed</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css">
</head>
<body>
<h3 class="mb-3">Responsive iframe</h3>
<div class="embed-responsive embed-responsive-16by9">
<iframe class="embed-responsive-item"
src="https://www.youtube.com/embed/zpOULjyy-n8?rel=0" allowfullscreen>
</iframe>
</div>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
</body>
</html>