Fix logic error in css_to_style.py
Fix logic error in css_to_style.py

The CSS styles only accepted parameters from the most specific match,
instead of composing the parameters in priority order up to the specific
match.  The unit test still passes, though there aren't yet tests that
lower priority parameters are being blended with the parameters from the
exact match.

rlc2/pygame_maker,rlc2/pygame_maker