What CSS code do I need to make the language codes uppercase?

Hi,

that's not particularly a question for this module, but a general theming question. You would need to inspect the HTML of your website, because the elements and classes are depending on the theme you're using.

On a most sites I have seen the following would be enough. But that's what you already seem to have tested out.

.language-link {
  text-transform: uppercase;
}

Hi thanks for getting back to me.
It now works and I learned something.
I had the development settings enabled to not cache markup, but with that enabled stylesheets are still cached.
I had expected that nothign would be cached but that's clearly not the case.
So after clearing the cache my lines in the custom stylesheet where picked up.
Greetings,
Rob

Great to hear. All the best with your Drupal experience.

Automatically closed - issue fixed for 2 weeks with no activity.