This example shows a simple smiley face rendered as an SVG using React, with the face positioned based on the browser window’s dimensions. The code uses React and ReactDOM to mount a component that draws a single circle, while commented-out markup hints at a fuller face with eyes and a mouth. The rendering approach is declarative JSX with computed coordinates from `window.innerWidth` and `window.innerHeight`, and the interaction is limited to static SVG output without event handling.