The code works fine only if you have the font imported in your Custom CSS. The theme does not import this font currently. Pls insert the following CSS into Custom CSS tab along with the above code to change the menu font –
@import url(http://fonts.googleapis.com/css?family=Open+Sans+Condensed:300,300italic,700);
You can customize the above import code at
http://www.google.com/fonts#UsePlace:use/Collection:Open+Sans+Condensed