Character sheet on portrait screen.

So, I work in IT and 90% of my time is spent on code that is 130 characters long.  I have 3 big 32" screens in Portrait.  So this is what happens when your character sheet viewer comes up.

I know you already don't pay attention to those of us using Portrait orientation screens for Character Sheets, but could you move the button a bit closer to where the action is...

The escape key will also close it.

Your window is so narrow it's in mobile display mode, where that button is usually conveniently placed. I don't know enough about reactive design to know whether it's even possible for them to differentiate between phone/tablet and computer with narrow window.