This example shows a yellow smiley face with black-outlined circular eyes and a curved mouth, rendered as an SVG inside a React application. The face is composed of modular React components, with a yellow background circle, two eye circles, and a mouth path generated using the d3.arc API. The d3 arc function creates the mouth’s crescent shape by specifying inner and outer radii and start and end angles, while the FaceContainer component positions the entire group using an SVG transform. The code relies on D3 v7 for arc generation and React for component-based structuring.