This example displays a grid of 50 identical smiley faces, each rendered as a yellow circle with black stroke, two eyes, and an arc-shaped mouth. Built with React components, the face features are composed from reusable SVG elements including `FaceContainer`, `OutsideCircle`, `Eyes`, and `Mouth`. The mouth uses a D3 arc generator with specified inner and outer radii and angles. The code leverages React’s component structure and D3’s `range` function to generate the repeated faces across the viewport.