A stylized smiley face rendered with React and SVG. The face consists of a yellow circle with a black stroke, plus two smaller black circles for eyes, all positioned using computed coordinates based on fixed width and height values. The component uses React’s `ReactDOM.render` to mount the SVG into the DOM, with all geometry derived from constants like `centerX`, `centerY`, and `eyeOffsetX`. The code defines the visual elements declaratively, relying on SVG circle elements and React’s rendering pipeline.