Under “Files & Links” settings, try switching the toggle for “Use [[wikilinks]]” to on like I have it, because it appears that your [[ ]] wikilinks are converted automatically to []() markdown links, and then retest the snippets.
Actually I don’t think it matters, I’ve disabled mine and it still works on my end.
I have no idea what is going on on your side I’m on a desktop Obsidian on Windows, maybe you’re on Mobile or a different OS?
It doesn’t change it either, with the Wikilinks ON.
I’m on a Mac, so maybe that’s an OS issue, but I checked on my iPhone and the issue is still there, so it doesn’t seem to be directly related to the macOS itself, otherwise the iPhone would be different, right?
1 - Wikilinks has to be ON
2 - When I make changes to the .css file, even with Wikilinks turned on, the old links I created are not automatically updated so that’s why I wasn’t seeing any changes with your code. Only when I created new links was I able to see the changes