This example shows a yellow smiley face composed of a circular face, two eyes, and a curved mouth, rendered as scalable vector graphics. The implementation uses React components for the face and eyes, while D3’s `arc` generator creates the mouth path. All shapes are drawn inside a single SVG group, positioned via a transform, with fixed pixel dimensions for width and height. The code relies on React’s `ReactDOM.render` to mount the app and D3 v5 for the arc calculation.