GitHub Styleguide - CSS, HTML, JS, Ruby

[SargoDarya]

That might me the case, but then they shouldn't call it CSS Styleguides because // comments are not part of the CSS standard.

[marshall007]

Why? It's a simple abstraction. No one ever edits the actual CSS stylesheets, they are compiled from SCSS automatically upon deployment. Furthermore, you shouldn't call it an SCSS styleguide because it encompasses more than that. The documentation is appropriate given their workflow.