This example shows a grid of 63 randomly generated smiley faces, each with a purple circular background, green stroke, two eyes, and an arc-based mouth. The faces vary in stroke width, eye position, eye radius, and mouth dimensions due to randomized parameters. The visualization is built with React components and rendered as SVG, using D3’s `arc` API to generate the mouth paths and `range` to create the array of faces. All faces share the same center and dimensions within a 160-by-160 viewport.