Stylesheet Parser

[shawn_a]

That is to use your own custom config.js, since you should not modify core files, they get overwritten on upgrades. you should copy config.js and use your own copy, that is how you do a custom config.js, or at least how i do it.

Those are ID specific styles so they really cannot be used on multiple items so that makes sense why you cant use it.
You have to add an id to an element, and ids must be unique