Fork of Let's make a face: part 3
This visualization displays a classic smiley face constructed from SVG shapes, with a gold circular head, black outlined stroke, two solid black eyes, and a curved mouth. It is a React component that uses D3’s `arc` generator to compute the mouth’s path, while React DOM handles rendering. The face is centered via a transform, with all coordinates derived from fixed constants. The code relies on React 17, D3 v7, and SVG rendering.