A grid of eight yellow smiley faces is rendered as SVG, each with a dark outline, two circular eyes, and an arc-shaped mouth. The faces vary randomly in rotation angle, stroke thickness, and eye size. Built with React and D3, the example uses the D3 `arc` API to generate the mouth path and D3 `range` to create the array of faces. The `Face` component assembles the head, eyes, and mouth, and a rotation transform is applied to each SVG group.