Idiomatic way to modify strapi admin html / css

Hello, my relation names are currently being cut off:


I’d like to modify the css so that these elements aren’t given equal spacing. I want the ‘minus’ symbol to have a much smaller width than it currently has so that my data can show through.

I believe that this avenue is the correct one:

I’d appreciate any tips and/or confirmations that this is the idiomatic way to accomplish this.

Thank you for your time.

Idk why, but in my case I see a way more text:
Strapi v3.2.5

Strange, I’m not sure how to go about sorting this out.

Strapi 3.2.5