Wikimedia Bugzilla is closed!

Cite.php should generate ID values that can be styled with the CSS 2 attribute
selectors i.e.

id="_ref-$1" and id="_note-$1"

instead of

id="_ref_$1" and  id="_note_$1"

One could then apply a style to all elements that use _ref and _note using:

sup[id|="_ref"] { . . . }

and

li[id|="_note"] { . . . }