Be careful with old versions!
These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.
[fix] Firefox 44+ compatibility
[change] internal tweaks and code cleanup
[change] dropped support for Firefox 40 and older
To insure this add-on runs correctly on future Firefox versions, support for Fx15 (and older) had to be dropped.
- changes for unprefixed CSS