title: Side Panel Nav - How to Collapse and Expand with Arrow?
body: <p>Was wondering how to accomplish the same effect as what is in Google Maps with the side panel navigation collapsing and expanding. When clicking the arrow the side panel nav expand and the arrow moves with it.  Please see screenshots picture attached.  </p>
  
  <p>collapsed </p>
  
  <p><img src="https://i.stack.imgur.com/jIKh0.png" alt="collapsed "></p>
  
  <p>expanded</p>
  
  <p><img src="https://i.stack.imgur.com/q7H1j.png" alt="expanded"></p>