Audio Playback Doesn't Fit On Screen

I know this will vary by phone and I don’t have a lot of devices to test on, so maybe it’s just my personal problem, but…

When I’m doing the audio playback, I have to position it very carefully to get it to fit within my screen (see screenshot). What might be nice, in the future, is to have the introductory page and then another button that leads to the playback which could be a full-screen modal rather than having it in the inset box on the page. There, I’d have it be a flexbox or something like it that establishes the size of the playback controls and then uses the rest of the screen, as available to show the scrolling dialog. The ones with video would have even less space for the script, but it would make for a better user experience, I think.