title: Make boundary for ol static image
body: <p>I'm using ol v5.3.0 for view static image.
  I want to bound the image for the size of the ol div.
  When the image minimize more than the div size the will not minimize anymore.
  I tried to use the projection attribute of the static image with the extent of the original image size
  But it does not help.
  there is any option to do it?</p>