This example displays a simple, yellow smiley face that scales responsively to fill the browser window, centering itself and drawing its eyes based on calculated offsets. The face renders through React’s declarative SVG components, using `React.createElement` implicitly via JSX to build circles for the head and eyes, with a yellow fill and black stroke. The code manually computes geometric values like radius and position from `window.innerWidth` and `window.innerHeight`, then renders the SVG using `ReactDOM.render`. No external data or interaction is involved; it is purely a static, programmatic drawing.