What’s this?

An example of position: sticky as proposed on www-style.

Watch as the blue title bars remain in the viewport at top: 10px until their parent no longer fits.
All thanks to position: sticky. There are no scroll handlers on this page.

Support: Chromium 23.0.1247.0 with the --enable-experimental-webkit-features flag enabled
via about:flags.

Scroll this page.

Your browser does not support position: sticky!!