Because these specs are in progress at the W3C, so they don't need to be prefixed or hidden in some way: https://news.ycombinator.com/item?id=15314812 https://n

Because these specs are in progress at the W3C, so they don't need to be prefixed or hidden in some way: https://news.ycombinator.com/item?id=15314812 https://news.ycombinator.com/item?id=15314812 min() and max() Haven't been enabled in iOS 11 yet, as the article states.