Simple CSS Page

<!DOCTYPE html>
<html>
  <head>
    <title>Simple CSS Page</title>
    <style>
      body {
        font-family: Arial, sans-serif;
      }
      h1 {
        color: red;
      }
      ol {
        margin-top: 10px;
        padding-left: 20px;
      }
      li {
        margin-bottom: 5px;
      }
    </style>
  </head>
  <body>
    <h1>My Favorite Activities</h1>
    <ol>
      <li>Reading Books</li>
      <li>Playing Football</li>
      <li>Learning HTML & CSS</li>
      <li>Watching Documentaries</li>
    </ol>
  </body>
</html>