title: Modal window location
body: <p>I have a modal window(popup) that does not fit on the screen height. It opens by pressing a button. The button may be in different part of webpage. Is there a solution to the modal window opened at the top of the screen(for example top: 100px) by pressing a button? 
  When I use position fixed, the only way to make scrollY on modal window, but it is not the way I want.</p>