Let's Make Fac using D3
This example draws a cartoon face using D3 version 6, with SVG shapes for the head, eyes, eyebrows, and mouth. The face is centered via a translated group, and the eyebrows animate up and down using chained `transition().duration()` calls. The code demonstrates local ES6 module imports, loading D3 from UNPKG, and uses `d3.select`, `d3.arc`, and SVG attrs like `cx` and `r` to construct the static and animated elements.