Let's make a face with D3.js
This example builds a simple cartoon face using D3.js v6 and SVG rendering. It draws a yellow circle for the head, two black circles for eyes, and a mouth created with the `d3.arc()` generator. The code selects the SVG element, reads its width and height attributes, and positions all shapes relative to the center using fixed offsets. The mouth is rendered as a path within a translated `<g>` group, using an arc with specified inner and outer radii and angles.