This example renders a simple emoji-style face with two eyes and a curved mouth using SVG, built with React and D3. The face is centered via a translated group, with a yellow circle for the head and black stroke. Eye positions and radii are set as constants. The mouth is drawn using D3’s `arc` generator, which creates a path based on specified inner and outer radii plus start and end angles. All elements are computed from a fixed canvas size, demonstrating a clean, modular approach to constructing geometric shapes in a web visualization.