title: Navigation rail with flutter
body: <p>The material design guidelines includes a component called <a href="https://material.io/components/navigation-rail" rel="noreferrer">Navigation rail</a>.</p>
  
  <p>How to create Navigation rail with flutter?</p>
  
  <p><a href="https://i.stack.imgur.com/HPEos.png" rel="noreferrer"><img src="https://i.stack.imgur.com/HPEos.png" alt="enter image description here"></a></p>