I didn't realize it was tracked like this, but I have noticed that as of iOS 26, Safari has gotten a huge number of great web features. It has WebGPU of course, but many small things like fixing up missing parts of the OPFS API that make it actually usable now. Now they even have the field-sizing CSS property [0], fixing imo the most glaring ommission from CSS: the inability to make text input boxes grow to fit the input text!
`contenteditable` is an HTML attribute but it depends on JavaScript to do anything useful. This problem is one of layout, CSS's domain, so `field-sizing` solves it while leaving HTML form elements to do the actual job of taking input.
[0]: https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/P...