Center but overlay complete background

[januz]

Ran across your plugin today and love it! I'm struggling to get the exact result I would like to see though.

I'm using no border, so basically just want a focussed view of one buffer without seeing anything else in the background which I can achieve with these settings:

But ideally, I would like to center the zoomed/focused buffer so that it appears directly in front of me instead of to the left. I can achieve this with these settings:

But unfortunately, these settings lead to the background being shown which I would like to avoid. In short, I would like to have the combination of the two settings with

• the focused buffer taking up the complete space and covering everything else
• but the text area being centered

Is this possible? Thanks so much!