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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Example of Bootstrap 3 Headings with Secondary Text</title> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <style type="text/css"> .bs-example{ margin: 20px; } </style> </head> <body> <div class="bs-example"> <h1>h1. Bootstrap heading <small>Secondary text</small></h1> <h2>h2. Bootstrap heading <small>Secondary text</small></h2> <h3>h3. Bootstrap heading <small>Secondary text</small></h3> <h4>h4. Bootstrap heading <small>Secondary text</small></h4> <h5>h5. Bootstrap heading <small>Secondary text</small></h5> <h6>h6. Bootstrap heading <small>Secondary text</small></h6> <hr> <h1>h1. Bootstrap heading <span class="small">Secondary text</span></h1> <h2>h2. Bootstrap heading <span class="small">Secondary text</span></h2> <h3>h3. Bootstrap heading <span class="small">Secondary text</span></h3> <h4>h4. Bootstrap heading <span class="small">Secondary text</span></h4> <h5>h5. Bootstrap heading <span class="small">Secondary text</span></h5> <h6>h6. Bootstrap heading <span class="small">Secondary text</span></h6> </div> </body> </html>