This example shows a simple smiley face built from three SVG circles: a large yellow face and two smaller eyes. It uses React to render the DOM structure, with the static SVG markup embedded directly in the HTML file. The code references React 17 via UMD builds and includes an `index.js` placeholder that renders a "Hello JSX" heading, but the visible face is drawn entirely from the hardcoded SVG elements, not from the React component.