Why won't neopets won't let you put 'display' 'position' or 'visibility' into the coding for your guild?

You can't use them in the coding as neopets have their own neohtml so all coding can be safe for users to view.

I have found someone's successful solution: at the end of the page where there is
[/style]
(only using the fancy brackets, not the square ones), if you put a space between the bracket [ and the /style so that it appears so:
[ /style] (fancy brackets, of course)
it accepts the Word position in the coding.