This example shows a static cartoon face built with SVG elements—a yellow circle head, two eyes, and a mouth—positioned using React components and D3’s `arc()` generator for the mouth path. The code imports React, ReactDOM, and the arc function from D3 v7, then defines constants for face dimensions and renders the face inside a `<g>` group translated to the center of a 960×500 viewport. The mouth arc uses `innerRadius`, `outerRadius`, and fixed angles to create a smile shape.