[ttsda]

I was having problems with most userChrome.css I found on FF Dev Edition on Mac OS.

Eventually found this repo with some pretty good ones: https://github.com/Timvde/UserChrome-Tweaks/tree/master/tabs

Here's what I've got: https://gist.github.com/tiagoad/c85f9752033b1d78d23c5bae7373...