This example shows a yellow smiley face drawn with SVG shapes, centered on a 960×500 canvas. It uses React components to render a background circle, two eye circles, and a mouth arc generated with D3’s `arc()` function. The face is positioned using SVG transforms, with stroke width, eye offsets, and mouth radius defined as constants. The code combines React’s declarative JSX with D3’s geometry helpers, loading d3.v5 and React 16.9 from CDNs, and renders everything as static SVG without interaction or animation.