Here's a recording (2 hours) from a zoom demo I gave breaking down this CSS art work by Victoria Bergquist, towards the end (after recreating the Taco from the reference piece) I add a little bit of CSS Animations. You can experiment with the completed taco, as well as the taco + face and the animated version on netnet.
In this follow up video (1 hour) I replace those animations with "interactivity" (specifically hover && click). You can experiment with completed sketches on netnet, specifically the CSS hover + CSS click version, the JS hover version and the CSS hover + JS click version.