So starting today all your fonts don't load. Because CORS. No 'Access-Control-Allow-Origin' header is present on the requested resource. Here's what to do. 1) Remember your CloudFront password. 2) Edit your behavior   3) Forwarding headers -> whitelist 4) Add "Origin" 5) Add rack-cors to Gemfile gem 'rack-cors' 6) Add stuff to require 'rack/cors' use Rack::Cors do   # allow all origins in development   allow do     origins '*'     resource '*',         :headers => :any,         :methods => [:get, :post, :delete, :put, :options]   end end 7) Deploy 8) Try to forget about CORS Did that work? Why not try my tool, a prioritization tool for product teams that lets you rank choices. It even lets you import a Trello board!