For all those complaining that Stylish stopped working on FF 61: Mozilla (again) broke up things. "-moz-document" (which never left the "experimental" status) is now blocked to work on remote URL, i.e., it's useless now. Just remove the "-moz-document" lines from the scripts and they will start working again. About the URL restrictions, now Stylish requires the addresses to be input in a specific field on the bottom of the script editing Page. Of course, incorporating "-moz-document" in the script was much easier, dozens of domains could be filtered at once. Now, they have to be entered one by one. On the plus side, Stylish still has the same flexibility regarding domain definitions, including regex rules! On the plus-plus side, it doesn't depend on Mozilla's moods anymore...