title: Responsive Navigation Menu Resize?
body: <p>I am trying to build an extremely simple responsive navigation menu. Am having some problems here.</p>
  
  <ol>
  <li>When I resize the window equal to or lower than 768px in width, the responsive menu
  will not work. </li>
  <li>When I refresh the page at a lower window width equal to or less than
      768px, the responsive navigation works... But, if I resize even by
      one pixel, the responsive navigation display is hidden again.</li>
  </ol>
  
  <p>I have created a CodePen here: <a href="http://codepen.io/anon/pen/fHsti" rel="nofollow">http://codepen.io/anon/pen/fHsti</a></p>
  
  <p>Thank you so much for your help!</p>