Joomla plugin. Hyphenation for browsers that do NOT support CSS property hyphens (e.g. Chrome) or do not support languages you selected in this plugin.
included the complete content of the file correctly in the HEAD of the template but always the first selector in the css file was ignored by the browser / inspector (Vivaldi, FireFox) like it wouldn't exist.
All works fine with Protostar and Joomla 3.9.3.
After 2h I'm giving up and use addCustomTag(...) now.
The devil knows why. We had a template of j51 (j51_robyn) where the old lines
included the complete content of the file correctly in the HEAD of the template but always the first selector in the css file was ignored by the browser / inspector (Vivaldi, FireFox) like it wouldn't exist.
All works fine with Protostar and Joomla 3.9.3.
After 2h I'm giving up and use addCustomTag(...) now.