I Just installed Stylish 3 days ago but I can't make it work on my computer.
I mean ... I have the icon in the tool bar i can get the menu with the list of downloaded style
But it has no effect.
Also I can't modify a style
So i tried this at the office, and it worked perfectly (same style)
I use Firefox on both computer, same version (52.0 64 bits)
I have the same add-on on both (uBlock Origin / Ghostery / Stylish)
If anyone have an idea ... is there any other dependency out of the browser ?