It never mattered. It only mattered that your site worked in the big browsers. Internet Explorer then, Chrome and iOS Safari now. Developers would write their

It never mattered. It only mattered that your site worked in the big browsers. Internet Explorer then, Chrome and iOS Safari now. Developers would write their standards-compliant code, boast about it on Slashdot, then put in the hacks and weirdnesses to make it work on IE6. They could have skipped the standards step. I don't say this is a good thing: I probably have XHTML pages on one of my old, private sites, and I ran them through validators. But it was a waste of time, just like, I dunno, using WinUI instead of Electron is now, or not using React. Go with reality.