Board Thread:Support Requests - Designing Your Wiki/@comment-46034553-20200618190234/@comment-9605025-20200619042845

Regarding the customization policy, I believe the help page is the best we have to go on. Unfortunately, it leaves a lot of gray areas. However, the general understanding is as you said earlier. Whether or not something is against the policy, whether or not is appears to be against the policy as outlined on the help page, and whether or not wikis will get in trouble for certain things are all separate questions. In general, I go a bit further. Rather than using #WikiaArticle, I use #mw-content-text. It avoids things such as the print footer.