Exclude files from CSS minify

FlyingPress UI doesn't provide an option to exclude CSS files from minify because it's compatible with 99.99% of the files.

However, in any chance you would like to exclude CSS files from minifying, you can use the filter "flyingpress_exclude_from_minify:css" like below:

add_filter('flyingpress_exclude_from_minify:css', function($exclude_keywords){
   $exclude_keywords = ['my-theme'];
   return $exclude_keywords;
});