This example shows a simple smiley face built from SVG shapes, with a yellow circle for the head, two black eyes, and a mouth drawn as an arc. The face is centered using a D3 arc generator to create the mouth path, while React manages the component structure. The head and eyes are rendered as SVG circles, with the eyes offset symmetrically from the center. The mouth arc uses a start and end angle of π/2 to 3π/2, creating a half-circle smile. All elements are positioned within a translated group, using the D3 v7 library alongside React.