You can use backreferences \1 \2 etc. but you can also give them names explicitly.
it looks like this: (?<name>inner-regex)
Some flavors support it, kotlins doesn't apparently.

I don't actually know whether POSIX grep would support named groups :o

Ich bin leider jetzt furchtbar neugierig, wo die Vorlage herkommt, wonach kann ich bei knowyourmeme o.ä. suchen?

You can, another comment mentioned that. Only, I didn't mean to spread misinformation because I haven't used anything else in years.

I feel this, I like to see my wallpaper

I was amazed to find out you can open a new tab by using middle-click in firefox.

Fair point. My browser (FF) supports 'search in tabs' as well and suggest it over a new search engine result when typed in the address bar. I don't know what about the style makes me think this, but it looks like FF on Windows in the Screenshot.

Love seeing a GNOME rice, I tried some GNOME ricing on a Fedora myself, however I was unable to get any further than installing Extensions 'Just Perfection' to hide some elements or using 'Burn my Windows', which I loved.

What did you use to style your GNOME-Shell Components?