Firefox Compact Theme Fix

README.md

1. Navigate to Firefox profile directory (e.g. ~/Library/Application Support/Firefox/Profiles/ced012a1.default)
2. Copy the content of css file in this gist to chrome/userChrome.css (create if not exists).
3. Restart Firefox.

userChrome.css

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

#main-window[tabsintitlebar] #TabsToolbar {
  padding-left: 0 !important;
  padding-right: 0 !important;
  margin-bottom: 0;
}