Finimalism [Updated for 10.10.X]

[haze]

Just to double-check, you've added the CSS to the Dashboard > General "Custom CSS Code" field, and not the Settings > Display > "Custom CSS Code" field?

The jsdelivr link has fully updated now, so it shouldn't require any extra lines.

You can also use Ctrl+F5 or clear your cache, to make sure your browser isn't using a cached version of the theme instead of fetching the latest.

Can I also ask is your display resolution 3440x1440?

Yes, I've added it through admin dashboard. My resolution is 3440x1440. It definitely did the job, because it works on chrome. On other browsers it works, but only in full-screen mode (after clicking F11). Clearing cache doesn't make any difference.