warning: LF will be replaced by CRLF in challenge-countries/README.md. The file will have its original line endings in your working directory code example

Example 1: warning: LF will be replaced by CRLF

git config core.autocrlf true

Example 2: warning: LF will be replaced by CRLF in Design/css/bootstrap.min.css.

$ git config --global core.autocrlf input