PHPlist much to width for screen

Hi,
i just installed phplist, and am relatively familiar with installations of websites and web programs. but now i have a small problem, I have normal monitors of 1920 px wide, but phplist is way too wide, I have already tried a lot, but a large part of the page falls outside the right side of the screen. also there is no scroll bar at the bottom, is there a setting somewhere that I have not seen or found?
I added a picture so you can see what I mean, can you help me with that?

Thanks !

Problem solved! it is a Chrome Browser issue

That was what I was going to say. I always start by reducing the view to see what I’m missing. Glad you got it working.