This example shows a yellow smiley face with black-outlined circular background, two eyes, and a curved mouth, all rendered as SVG elements within a React application. The face is composed of reusable components, including `BackgroundCircle`, `Eyes`, `Mouth`, and `FaceContainer`, which assemble into a single `Face` component. It uses React for component composition and the `arc` function from D3 (d3.v7) to generate the mouth’s path geometry. The code uses fixed dimensions and hardcoded offsets, with no interactivity or data-driven behavior.