Automattic/_s — pull request #526 by emiluzelac (2014-06-25 02:45:31+00:00)
Title: Left Property for Primary Menu

Since ```.main-navigation ul ul ul {``` already inherits all but ```top: 1.5em;``` from the parent ```.main-navigation ul ul ul {``` we don't need ```left: -999em;```. Basically it has no use at all.

Tested and works as usual without it :)

P.S. Unless there's something that I am not seeing.