Aha, I don't think it was that post (feels too recent and I don't remember the main post), but the much simpler demo I remember is linked in the comments there:

Aha, I don't think it was that post (feels too recent and I don't remember the main post), but the much simpler demo I remember is linked in the comments there: https://css-tricks.com/using-css-without-html/ https://css-tricks.com/using-css-without-html/