This example shows a simple, static smiley face built with React and rendered as SVG, with added decorative shapes like ears, a hat-like rectangle, and extra colored elements. The code uses React’s `ReactDOM.render` to mount the SVG, while D3’s `arc` generates the curved mouth path. The face is centered with explicit `cx`, `cy`, and radius values, and each feature—eyes, mouth, teeth, and additional shapes—is positioned using inline transforms and coordinates. No data is loaded; instead, the visualization relies entirely on hardcoded geometry and D3’s arc helper for the smile.