That's old. Nowadays, it would only be impressive if it were written in pure CSS.
Yes, that's a snark, but also a challenge to those with time on their hands. Bonus points if your solution grows the universe to contain, e.g., an escaping glider.
Apparently, it is: https://github.com/elitheeli/stupid-machines (I haven't taken the time to check that, but take it that 'the internet' would have corrected this by now if it weren't true)
Yes, that's a snark, but also a challenge to those with time on their hands. Bonus points if your solution grows the universe to contain, e.g., an escaping glider.