To get a little pedantic, the DOM changes in that the size of some element gets modified after the page loads, causing other elements to shift around visually.

To get a little pedantic, the DOM changes in that the size of some element gets modified after the page loads, causing other elements to shift around visually. I can empathize with the developers, but I would prefer if they sized out those elements in advance so the page elements didn't get shifted all over the place once something loads.