Files viewer indentation on the right too big

What I’m trying to do

I’m trying to remove the indentation in the files viewer on the right side of folder / file names. It cuts off file and folder names and leaves unneccessary blank space. See image below.

Things I have tried

I’ve perused the settings, but haven’t found a setting that deals with this. I’ve tried several CSS snippets, but either they weren’t what I’m looking for or I didn’t implement them correctly (not familiar with CSS). Furthermore, English is not my native language and I find it difficult to describe exactly what my problem is and what I want solved. I hope you understand.

Thank you for your help.