I long ago gave up on editing the .css file with
any WYSIWYG or wizard-type editor; I do everything in
Notepad.
Check the
W3 CSS Tutorial
for good info, or pick up a good CSS book (there are plenty out
there).
In addition, you might spend a little time cleaning up the
formatting in Word even before you import it into RH. In Word, you
can Find&Replace styles very easily.
Good luck,
Leon