demo_code/marginpadding.html at main · Golu9798/demo_code · GitHub

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<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Bootstrap demo</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.5/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-SgOJa3DmI69IUzQ2PVdRZhwQ+dy64/BUtbMJw1MZ8t5HZApcHrRKUc4W0kG879m7" crossorigin="anonymous">
  </head>
  <body class="bg-dark">
    <h1 class="bg-warning">Hello, world!</h1>
<h2  class="bg-info p-4">hello user</h2>
<h2  class="bg-info py-4">hello user</h2>
<h2  class="bg-info pt-4">hello user</h2>
      </body>
    </html>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.5/dist/js/bootstrap.bundle.min.js" integrity="sha384-k6d4wzSIapyDyv1kpU366/PK5hCdSbCRGRCMv+eplOQJWyd1fbcAu9OCUj5zNLiq" crossorigin="anonymous"></script>
  </body>
</html>