IFS-3338 Add everything in css folder to git ignore
IFS-3338 Add everything in css folder to git ignore

InnovateUKGitHub/innovation-funding-service,InnovateUKGitHub/innovation-funding-service,InnovateUKGitHub/innovation-funding-service,InnovateUKGitHub/innovation-funding-service,InnovateUKGitHub/innovation-funding-service