Link to a style guide for CSS

[ESWAT]

Would be useful to have a convention going for CSS. Difficulty would be finding one with sane rules and works mostly with what we have already, so we don’t have to make a lot of changes to wedge into one.

The GitHub and mdo’s style guides come to mind right now, but by all means feel free to link to others that we can repurpose for our needs.

[chadwhitacre]

@hmig points to http://trulia.github.io/hologram/.

[chadwhitacre]

Also: https://github.com/stubbornella/oocss/wiki.

[chadwhitacre]

Also: http://alistapart.com/blog/post/getting-started-with-pattern-libraries.

[chadwhitacre]

Apparently I'm collecting "CSS best practices" things here.

https://medium.com/@fat/mediums-css-is-actually-pretty-fucking-good-b8e2a6c78b06

[chadwhitacre]

https://github.com/darcyclarke/DSS

[chadwhitacre]

Old: gratipay/gratipay.com#1054

[chadwhitacre]

http://mdo.github.io/code-guide/