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<!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://cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/css/bootstrap.min.css"> <script src="https://cdn.jsdelivr.net/npm/jquery@3.7.1/dist/jquery.slim.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container"> <h1>h1 Bootstrap heading (2.5rem = 40px)</h1> <h2>h2 Bootstrap heading (2rem = 32px)</h2> <h3>h3 Bootstrap heading (1.75rem = 28px)</h3> <h4>h4 Bootstrap heading (1.5rem = 24px)</h4> <h5>h5 Bootstrap heading (1.25rem = 20px)</h5> <h6>h6 Bootstrap heading (1rem = 16px)</h6> </div> </body> </html>
