This example shows a static SVG face built from three circles—a yellow head with black outlines and two smaller eye circles—rendered directly in the page body. It also initializes a React 17 app that mounts a simple "Hello JSX" heading into a separate root div using `ReactDOM.render`. The SVG markup uses explicit `cx`, `cy`, and `r` attributes, while the React code employs JSX components. No data source or interactivity is present; the visualization demonstrates basic SVG primitives alongside a minimal React setup.