This example shows a static smiley face composed of three SVG circles: a large yellow circle for the head and two smaller black circles for eyes. The rendering uses raw SVG elements directly in the HTML, with the `<circle>` elements specifying explicit `cx`, `cy`, `r`, `fill`, and `stroke` attributes. The page also initializes a React application via `ReactDOM.createRoot` and renders a simple "Hello JSX" heading, though this React output is separate from the SVG drawing. The overall composition is fixed and does not respond to interaction or data.