And yet people will load a megabyte of JavaScript just to create a date picker that looks nice while you need about 20 characters to get a bugfree one in HTML:

And yet people will load a megabyte of JavaScript just to create a date picker that looks nice while you need about 20 characters to get a bugfree one in HTML: <input type="date"> Everything you described is nice, but in the end it’s still up to the developer to support it and especially to choose its behavior. I can technically use “when reduced motion, html {animation: shake 1s infinity}” My idea of “user agent” is Safari’s Reader Mode.