Aside: Your header interacts unexpectedly with the sidenotes and some of the images -- https://imgur.com/a/bgLRcvD https://imgur.com/a/bgLRcvD I tested on Saf

Aside: Your header interacts unexpectedly with the sidenotes and some of the images -- https://imgur.com/a/bgLRcvD https://imgur.com/a/bgLRcvD I tested on Safari 12 and Firefox 66; The book flipping video did not demonstrate that behavior.