This example shows a yellow smiley face rendered as an SVG, composed of a background circle, two eyes, and a mouth arc. The React components (`BackgroundCircle`, `Eyes`, `Mouth`) are wrapped in a `FaceContainer` that translates the graphic to the center of a 960×500 viewport. The mouth uses D3’s `arc` generator to create a curved path, while the remaining shapes are plain SVG circles. The code imports React, ReactDOM, and D3 v5, and positions all elements via fixed offsets and radius constants.