Thanks, @schpengle …
I also found this on W3docs.com and started to use it but the idea of replacing a simple HTML tag with a plethora of coding just doesn’t make any sense. So I decided to use the marquee tag and grumble about the direction web development is going (over the cliff with the rest of the lemmings) until the new PG Interactions eventually addresses this or a far simpler CSS solution is adopted.
(Always looking for the easy way out…)