This example shows a smiling face made of yellow, black, and simple SVG shapes, centered on a white background. The face is composed with React components, including a background circle, two eyes, and a mouth drawn with a d3 arc path. The Face component passes layout and sizing props like centerX, centerY, and eyeOffsetX into subcomponents, while FaceContainer renders the SVG and applies a translation transform. The mouth’s arc is configured with inner and outer radii plus start and end angles from the d3 library.