A stylized smiley face is drawn using SVG circles and an arc for the mouth, centered within a 960 by 500 viewport. The face is constructed with React components, where each visual element is defined by computed constants such as eye offset, radius, and stroke width. D3’s `arc` generator creates the mouth path with specified inner and outer radii and angular range. The code uses React 16.7, ReactDOM, and D3 v7, rendering declaratively with JSX.