New theme (problem)

[Timbow]

Hello!
I'm developing a new theme, everything seems ok, but I have a problem. I can't set footer to bottom of the page.
I know that many people don't like to read foreign code, but I ask you to help me please.
Footer moves up and appears at the level of content.
......

If you type "make footer" into google then auto-complete gives you the top option "...stick to bottom", it is a very common problem. iirc youmake a container and give it height 100% then absolute position the footer div at the bottom,but I may have that wrong, we don't really teach css round here.