title: Sidebar navigation with Bootstrap 4
body: <p>I want to add a navigation to the left of my page. this navigation should have the full height of the page.</p>
  <p>I tried to build it with the Bootstrap grid system. But in this case, the navigation grows to much in width. Even if I use only <code>col-1</code> for the navigation sidebar.</p>
  <p>This is what I want to build:</p>
  <p><a href="https://i.stack.imgur.com/qu8ko.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qu8ko.png" alt="enter image description here" /></a></p>