This example shows a smiley face composed of SVG shapes, centered on a responsive full-window canvas. A yellow background circle forms the head, with two black eyes, pink blush accents, and a curved smile arc. The face is built from React components, including `BackgroundCircle`, `Eyes`, and `Mouth`, with the smile generated using D3’s `arc` function. The layout is centered via a translated SVG group, and all dimensions are computed from the window size.