Hello, how can I make a custom css file for each language?
You could try what I did for this multilingual site (10 languages):
- Localize your CSS file with localized strings (into
assetsfolder) - Use adequately
resources.ExecuteAsTemplate
See source for the above cited site:
See also: Is it possible to use translations in assets?
Merry Christmas

That’s amazing! thanks Nicolas,
do you know what comment system this website is using? https://www.safarnevesht.com/en/
Merry Christmas 
You have already asked this question over here
When opening a topic please keep the discussion On Topic.
Thank you.