Add fallback for calc() (https://trello.com/c/H3TStUOZ/60-no-fallbacks-for-browsers-without-css-calc)
Add fallback for calc()
(https://trello.com/c/H3TStUOZ/60-no-fallbacks-for-browsers-without-css-calc)

coldstorm/coldstorm,coldstorm/coldstorm