A grid of eighteen smiley faces, each with a yellow circular head, black outline, eyes, and a curved mouth, fills the view. Each face has randomized dimensions for its stroke width, eye radius, mouth radius, and mouth thickness, creating subtle visual variety across the grid. The example uses React components to compose the face hierarchy, with D3’s `arc` API generating the mouth path. The SVG is rendered via `FaceContainer`, translating each face to its center using D3’s `range` for iteration.