Board Thread:General Discussion/@comment-31790818-20180506212429/@comment-9605025-20180506223202

What do you mean in your first question? Are you asking how to apply a stylesheet to your wiki or are you asking more broadly about how to use CSS? If the former, I suggest you start reading here. If the former, there are plenty of site online that provide tutorials on how to use CSS. Although it isn't the most reliable when it comes to details, I find that w3schools is a decent place for beginners to start. Once you get the basics down, then you can start looking for the more accurate detail-oriented technical specifications.

Which navbox? Could you explain what you are trying to do and link to it?