Please name your favourite I-used-to-do-this-with-JavaScript-but-now-I-don't-need-to CSS properties/functionalities.

@ppk coming up: field-sizing https://caniuse.com/?search=field-sizing

"The field-sizing CSS property allows form controls such as <textarea> to be sized based on their content."

Right now auto-growing an input box with the content inside it requires some artful CSS layering and a sprinkle of JS

https://css-tricks.com/the-cleanest-trick-for-autogrowing-textareas/

"field-sizing" | Can I use... Support tables for HTML5, CSS3, etc

"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

@douginamug @ppk How could I forget this, I just started adding it as progressive enhancement to all our form themes about two weeks ago. 🤯