I dug into the CSS example before: it's not actually Turing-complete, but it comes really close.
The user still has to manually intervene to advance each iteration of the loop. It would be Turing-complete except for that one little thing, but it's not quite there.
The user still has to manually intervene to advance each iteration of the loop. It would be Turing-complete except for that one little thing, but it's not quite there.