Fork of Smiley Face Part II
This example renders a full-screen smiley face using React and SVG. The face is centered dynamically based on the window’s width and height, with a yellow circle for the head, black outlines, and two eyes; the mouth is intentionally omitted. The code uses React 16.9, ReactDOM, and JSX to define SVG circle elements, while the SVG `transform` attribute positions the drawing at the viewport center.