Control fullscreen slider height

I’m trying to get my site to look like this page:

http://www.bornwildproject.com/new-page-3-1/

Where the image spans the full width, is responsive, but is only a few hundred pixels high.

I can’t find an existing thread that deals with this specifically.

Secondly, is there any control for fullscreen slider or other that would allow for display of an image like the second one on this page (the mountains in background with sun flare and no people on it) where both the above and below content layers seem to float up over the background image that is also moving? Using fullscreen slider seems to achieve this for the bottom but not the top layers.

Thank you so so much. I really appreciate the help!