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It's just html/css so no js at all let alone d3.

I would not even know how to draw a circle with CSS to be honest.

Pretty sure css has a sin() fn, that's half your work

A div with width = height = border-radius (or width = height with border-radius:50%)

Whats your hourly rate? I'll pay you to make as many as you can in a few hours if you share the video.