fix(css): Remove right margin on settings (#4054) r=vladikoff
fix(css): Remove right margin on settings (#4054) r=vladikoff


shane-tomlinson/fxa-content-server,shane-tomlinson/fxa-content-server,mozilla/fxa-content-server,mozilla/fxa-content-server,mozilla/fxa-content-server,shane-tomlinson/fxa-content-server