Thread:Mystic Monkey/@comment-24014422-20180323230144/@comment-24014422-20180404054054

That's right, although you have to press the "UPDATE CSS" button after doing that for your changes to take action (as I said above).

And no, you cannot. The Less thing is not officially supported by Wikia; it is a user-made JS script that allows us to use the language. Therefore, we are bound to the script's scope which only allows site-wide Less pages.

Personally, I don't think it is really necessary to have a personal less page to check out the syntax and if it would work. As the ".less" pages support both LESS and CSS at the same time, and the output in MediaWiki:Monobook.css will always be in CSS. You will not have and you cannot write everything in Less, because that is not needed. Only syntaxes which are shorter made in LESS than in CSS are preferable to be used here.

So just experience with CSS at first when you are on a subject, and then see if there is an equivalent to that CSS solution you are picking in LESS. You can also check the LESS syntax here