.
.
.
      <nav class="grid-menu">
        I am a Menu
      </nav>
      <article class="grid-content">
        I am Content
      </article>
      <aside class="grid-panel">
        I am Info
      </aside>
      <footer class="grid-footer">
        I am a Footer
      </footer>
      <div class="grid-banner">
        I am a banner
      </div>
    </div>
  </body>
</html>