The only CSS I can see is under Content > Dark. It looks to me like it's all custom CSS.
Well, its possible that they might have used Twitter-Bootstrap under the hood and then compressed/minified it all? But then, there aren't any col-md-* classes around the divs, so I don't think that's a possibility. If they had to change the class names as well, why would they bother using TB?
All I see is jQuery and raw JS. No fancy MVC frameworks.
That's actually ideal and best for performance! But having something light-weight like Backbone can help a lot in modularizing code. But if you can code smartly and always carefully follow DRY (Don't repeat yourself), I don't think even that is necessary.
Well, its possible that they might have used Twitter-Bootstrap under the hood and then compressed/minified it all? But then, there aren't any col-md-* classes around the divs, so I don't think that's a possibility. If they had to change the class names as well, why would they bother using TB?
That's actually ideal and best for performance! But having something light-weight like Backbone can help a lot in modularizing code. But if you can code smartly and always carefully follow DRY (Don't repeat yourself), I don't think even that is necessary.