The CTF team I'm in has a GitHub Pages website powered by Jekyll, but the markdown rich text isn't rendering. I suspect that CSS is the problem, not Jekyll or the markdown renderer, but I'm not sure where the problem is.
Site: http://ctftoolkit.com/
Blog post: http://www.ctftoolkit.com/tutorial/2015/12/12/swift.html
GitHub Repo: https://github.com/ID10T-Errors/ID10T-Errors.github.io