This example shows a yellow face constructed from SVG shapes, centered within a 960-by-500 viewport. The face is drawn using React and D3.js, with circles for the head and eyes and a D3 arc path for the mouth. The React component renders directly into the DOM via ReactDOM, while D3’s `arc()` API generates the mouth’s curved path. All coordinates are computed relative to the center, and the SVG is produced declaratively through JSX.