This example renders a simple cartoon face using React components and SVG. It shows a yellow circle face with two eyes and a mouth, centered on a 960x500 canvas. The code defines reusable components like `BackgroundCircle`, `Eyes`, and `Mouth`, which use d3’s `arc` to generate the mouth path. The face is composed declaratively via React props in `Face.js`, with `FaceContainer` providing the SVG root and coordinate transforms. The main app sets dimensions and offsets directly in JSX, targeting plain HTML via ReactDOM.