warning: LF will be replaced by CRLF in projfrontend/src/styles.css. 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: lf will be replaced by crlf

Linux and MacOS: use characters as in file
$ git config --global core.autocrlf input

Windows: deactivate the automatic conversion to CRLF
$ git config --global core.autocrlf false