css-cookbook/cookbook-template.html

<!doctype html>
<html lang="en-us">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width" />
    <title>CSS Cookbook: template</title>
    <link rel="stylesheet" href="styles.css" />
    <style>
      /* CSS the visitor will not change */
    </style>

    <style class="editable">
      /* CSS the visitor can play with */
    </style>
  </head>

  <body>
    <section class="preview">
      <!-- HTML for your component here. -->
    </section>

    <textarea class="playable playable-css" style="height: 170px">
<!-- repeat the second block of CSS here. You can tweak the height to make more room for the content. -->
    </textarea>

    <textarea class="playable playable-html" style="height: 70px">
<!-- repeat the HTML for your component here.  You can tweak the height to make more room for the content.  --></textarea
    >

    <!-- leave everything below here alone -->
    <div class="playable-buttons">
      <input id="reset" type="button" value="Reset" />
    </div>
  </body>
  <script src="playable.js"></script>
</html>