This example displays a simple smiley face composed of three SVG circles on a yellow background with a black outline. The HTML file directly embeds the circle elements, positioning them with explicit `cx` and `cy` attributes and setting the radius and stroke properties. Although the page includes React and ReactDOM libraries, the actual rendering relies on static SVG markup rather than dynamic React components. The JavaScript file defines a trivial "Hello JSX" heading but does not interact with the face graphic.