This example shows a grid of 18 cartoon faces, each with yellow circular backgrounds, black-outlined strokes, eyes, and arched mouths. The faces are rendered as SVG elements using React components, with D3’s `arc` function generating the mouth paths. Randomness is applied to eye radius per face, creating slight variation across the grid. The code uses React 16.9 and D3 v6, with components like `FaceContainer` handling the SVG coordinate transforms.