A yellow smiley face built from SVG primitives is centered on a gray canvas. The face is composed of a circular background, two black eye circles, and a mouth arc, all rendered as separate React components. The code uses React with D3 v6’s `arc` API to generate the mouth’s path, and passes layout parameters like offsets and radii to position elements. The `FaceContainer` wraps everything in an SVG with a translated group, demonstrating a modular, component-based approach to creating and composing shapes.