Run Example

Edit This Code:
<!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/3.4.0/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script>
</head>
<body> 
 
<div class="container">
  <h1>Heading 1 <span class="label label-default">label 1</span></h1>
  <h2>Heading 2 <span class="label label-default">label 2</span></h2>
  <h3>Heading 3 <span class="label label-default">label 3</span></h3>
  <h4>Heading 4 <span class="label label-default">label 4</span></h4>
  <h5>Heading 5 <span class="label label-default">label 5</span></h5>
  <h6>Heading 6 <span class="label label-default">label 6</span></h6>
</div>

</body>
</html>
Result: