position:device-fixed;! https://www.quirksmode.org/blog/archives/2010/12/the_fifth_posit.html https://www.quirksmode.org/blog/archives/2010/12/the_fifth_p...

position:device-fixed;! https://www.quirksmode.org/blog/archives/2010/12/the_fifth_posit.html https://www.quirksmode.org/blog/archives/2010/12/the_fifth_p... Basically a version of position:fixed that doesn't get zoomed in on when zooming the rest of the page on mobile, so it's always actually visible. would be hugely useful for making bottom/top menus like apps have, without having to re-implement zooming in javascript.