--link-stylesheet path not relative to working directory

If I try to link to the stylesheet instead of embedding it
(in rst2html5) I get a path that is not relative to the
working directory. Instead it backs up to the root and
works it's way down. (But that's terrible, since the
target computer naturally has a different folder
structure.)

1. Is this expected?

2. Possibly relevant (?): I invoke a particular Python
by using it's full path.

Thanks, Alan Isaac