Board Thread:General Discussion/@comment-24739709-20151026190758/@comment-4018164-20151029155438

Withersoul 235 wrote: How do you do CSS/JC in general ? CSS and JS are commonly stored in MediaWiki:Wikia.css MediaWiki:Common.js, respectively (see this for more info about what pages are used for adding CSS/JS).

If you want to start learning those languages, there are some really good guides online. There are some really good ones on YouTube as well, if you prefer videos. Give it a quick search (e.g. "css tutorial") and you'd get some good results.