I was going to set them up with a starter project on https://glitch.com containing an index.html that demos the various html elements. I'd let them fiddle around with that for a bit, and then they choose a topic they're interested in and we'd build a small site about it.

I'm not mentioning css until they ask "How do I make it look nice?" and probably not mentioning js at all for now.

Does that seem like a decent approach? How would or how have you done it?