This example renders a grid of cartoon faces using React components and D3’s `arc` API for the mouth shape. Each face combines a yellow background circle, two eyes, and a mouth, all drawn as SVG elements within a `FaceContainer` that translates the coordinate system to the center. The `range` function from D3 generates 18 faces, and the code demonstrates how React functional components and D3’s arc generator work together to produce repeated, data-driven SVG visuals. The page loads React and D3 from CDNs and renders the output into a root div.