Max Height for iFrame???

I'm thinking everything is pretty much set for this game—I'm sure there will be issues or ideas that will come up, but for now I'm really happy with it.

The only thing is the pixels aren't crisp here on itch.  On my website everything is fine.  So I'm wondering if it just due to a max-height that itch has?

I could try to change things around but I designed my game specifically for 720px by 720px.  So would either have to change the level layouts or make a moving camera.

Any ideas?