Fork of Smiley Face Part III
This example renders a stylized smiley face using React and D3, centered within an SVG canvas. It shows a green circular head with black outlines, two black eye circles, and a curved mouth arc, all composed of D3 shape primitives. The React component defines the layout with explicit coordinates and uses D3’s `arc` generator to create the mouth path with specified inner and outer radii. The visualization is static, with rendering handled by ReactDOM into an SVG element, and it includes embedded YouTube video documentation.