This example demonstrates a bare minimum HTML page that renders a smiley face using inline SVG elements, including two circles for eyes and a larger circle for the face with a yellow fill and black stroke. The page also uses React and ReactDOM to mount a simple JSX component that displays the text "HELLO JSX" in a heading. The SVG is drawn directly in the markup with fixed coordinates and dimensions, while React handles dynamic content in a separate root div. The code imports React via CDN and uses ReactDOM.render to attach the component.