I'll second the "done" suggestion. I'm fairly new to web development, I got quite a few of them right simply by guessing, but it quickly changed to the next question before I had a chance to analyse and internalize why my guess was correct.

That said, I dig the format. It's interesting to be presented with a piece of unfamiliar syntax, and then be expected to work out it's meaning.

While I was playing I was thinking "It would be nice if they tracked the sequence in which answers were selected." On several questions, I immediately clicked a few that were obvious and then the rest I was like "...and maybe this one?"

Yeah that and/or a 'skip' button in case you can't sort it out.

I didn't figure out 15 and peeked at the JS source to get through, skipping would have been simpler.

A quicker way would've been to run document.querySelectorAll('the_selector') in your console to identify the elements to click

You can see the answers in the JS on the page.