tomayac’s Twitter Archive—№ 11,729

@briankardell @simevidas @ChromiumDev I guess it boils down to: define “can’t see it”. Is opacity: 0.001 visible? Or is opacity: 0.999 invisible? What about a grayscale filter on a gray background, etc. The spec right now is very conservative (w3c.github.io/IntersectionObserver/v2/#visibility), just to err on the safe side.