Ours, though I think it is still in the draft process... 

I believe the reasoning behind it is since we do not want the extra spacing --spacing line between css elements, due to increase file sizes-- having non-indented closing brackets are not as readable. So in essence having the indented closing bracket makes it easier to read. If you were wanting a more accurate explanation instead of my assumptions you can talk to @fezick or if he wants to comment on here.