Board Thread:Support Requests - Getting Technical/@comment-20013000-20140531122440/@comment-2170536-20140603000228

You can use both CSS and Javascript code cross-wiki very easily (via @import/importArticles, respectively) and take advantage of any improvements or bug fixes. You can also locally override anything you need to by defining it locally (as long as you import first and then locally define later, as the last definition takes precedence). If neither of those options works, you can definitely copy the entire CSS/Javascript code to a local file and modify it to meet your needs; at that point it is totally yours and you may modify it as you see fit; any foreign wikis using it must do so at their own risk.