This example renders a classic smiley face using React and SVG, with a yellow circle as the head and two smaller circles for eyes. The code constructs the SVG elements directly within JSX, applying a black stroke and yellow fill to the main face. React 16.9.0 is loaded via UMD scripts, and ReactDOM mounts the component to the `#root` div. The visualization is static, showing only the basic geometric shapes without any interactive behavior.