@[email protected], sorry for nub question, but how can I apply this?. I have copy-pasted it on my data folder then restart my server, but the style is not applied.
You must copy the style.css file to the static/ folder of your user(s). The style.css file that is in base directory is only used as a template for new users.
It's probably a bit confusing, but the idea is that every user in a #snac instance can potentially have their own CSS.