Aren't commonly within webpages. But they can be. They just often aren't because it is a confusing UX (because they almost never are.) Example from Codepen: ht

Aren't commonly within webpages. But they can be. They just often aren't because it is a confusing UX (because they almost never are.) Example from Codepen: https://vgy.me/IBmcUz.png https://vgy.me/IBmcUz.png