Muffcast-Client/options/options.html

<!DOCTYPE html>

<html>
  <head>
    <meta charset="utf-8">
  </head>

  <body>

    <form>
        <label>Muffcast URL<input type="url" id="muffcast-url" /></label> <br />
        <label>Muffcast Sync Interval<input type="number" id="muffcast-sync-interval" min="1000" step="1000" /></label> <br />
        <button type="submit">Save</button>
    </form>

    <script src="options.js"></script>

  </body>

</html>