peel

Nothing moves until the next page is ready; if that takes a while, a loader shows at the cursor. Then a fold sweeps from the bottom-right corner to the top-left one, and the page turns over in one go. The back of the sheet is a little darker, and the new page under it is in its shadow until the sheet has gone. Going back, the previous page turns back over this one, like a page in a book.

It’s all flat: the old page is a still copy cut along the fold with clip-path, over the real new page. The back of the sheet is the turned part mirrored across the fold, worked out again as the fold moves.