Excellent Rated 4 out of 5 stars

Been looking for something like this for some time. So many site that don't use margins or max-width that you get massive long lines of text right across the screen.

The preview is very useful too.

Only downfall is you can't write styles for set directories of a site. Otherwise 5 stars.

This review is for a previous version of the add-on (0.5.9).