This example creates a static yellow smiley face with black-outlined eyes and an implied mouth, rendered as SVG circles inside an HTML document. The face is centered on a 960 by 500 canvas, with two filled circles positioned as eyes and a large yellow circle serving as the head. React and ReactDOM are loaded via CDN, but the visible drawing is plain SVG markup. The accompanying `index.js` file renders a simple "Hello JSX" heading, showing the setup for a React component that is not yet integrated with the SVG face.