Fork of Create a face with d3.js!
This example draws a smiling face from basic SVG shapes—a yellow circle, two eyes, eyebrows, and a curved mouth—using D3.js selections and the `arc()` generator for the mouth path. The face is centered in a 960×500 SVG, with the eyebrows animating upward and back down via chained `transition().duration()` calls. It demonstrates importing `select` and `arc` from the D3 v7 module bundled through UNPKG, showing modular imports and SVG animation in a minimal, self-contained page.