title: Fixed sidebar inside a bootstrap modal
body: <p>I want to have a sidebar that sticks to the top when main content is being scrolled down. I've tried <code>position: fixed</code> but as I understand it doesn't work, because main body of a page is not being scrolled.
  I've also tried fiddling with <code>overflow-y</code>, but didn't have any luck either.<br>
  The left side is a long image showcasing my work, and the right side is a box with description of the image.<br>
  Here is simple jsbin example: <a href="https://jsbin.com/kilelehuno/edit?html,output%22jsbin%22" rel="nofollow noreferrer">jsbin</a></p>