A CodePen by Kageetai. Super Mario Scrolling Background - I wanted to try to build a super mario level background complete with parallax scrolling effect and little running mario.
The hard part was my eager to do it without JavaScript. So only CSS!
The sprites are from here: http://www.spriters-resource.com/snes/smarioworld/

I have not done any performance testing, could be quite heacy because much shifting of backgrounds.

GitHub-Repository: https://github.com/Kageetai/mario-background-parallax