Interesting.
Any chance of making it... "less extreme"? With this I mean:
1. Show the rest of the page outside the zoomed panel too.
2. Use the panel boundaries to "guide" scrolling. I'm thinking for instance in reading the page in your example with the reader in the landscape orientation, and fit to width. See
https://www.mobileread.com/forums/sh...d.php?t=370631