A grid of six-by-three smiley faces, each with randomized facial features, fills the viewport with subtle variety in eye position, mouth shape, and stroke weight. The example demonstrates component reuse in React by mapping over a range from D3’s `range` function to render multiple `Face` components. Each face combines SVG primitives—circles for the background and eyes—with a D3 `arc` path for the mouth, all composed through ES6 modules and positioned via a translated `<g>` element.