Rated 4 out of 5 stars

I would love to see this add-on have the ability to apply a style sheet that has a media query restriction that Firefox would not normally display. For instance, if the link element had something like media="only screen and (max-device-width: 480px)", it'd be great to have an option to force Firefox to utilize that style sheet even on a device that is more than 480px wide.

This review is for a previous version of the add-on (1.2.1).