A grid of 18 smiley faces, each rendered as a yellow circle with black strokes, eyes, and an arc-based mouth. The faces vary randomly in eye radius due to `Math.random()`, creating subtle differences across the repeated components. Built with React and D3 v7, the visualization uses reusable components like `Face`, `BackgroundCircle`, `Eyes`, and `Mouth`, with the mouth path generated by `d3.arc()`. Each face is drawn into an SVG via a `FaceContainer` that centers a `<g>` element using a transform.