A simple SVG smiley face is drawn using React components, where a yellow circle with a black stroke forms the head and two filled circles represent the eyes, positioned symmetrically around the center. The face is centered dynamically based on the window dimensions, with its size scaling relative to the viewport height. The implementation uses React 16.9 and ReactDOM to render the SVG elements directly in the browser, computing all positions and radii from the window's width and height rather than using fixed coordinates.