The article isn't complete/correct. Something did change with HTML. Since 2018 every browser interprets ANY <tag-name> with a dash as a valid HTMLElement, not H

The article isn't complete/correct. Something did change with HTML. Since 2018 every browser interprets ANY <tag-name> with a dash as a valid HTMLElement, not HTMLUnknownElement. Absolutly NO JavaScript required to turn the DIV-soup into <semantic-html> and CSS