A modular React component renders a yellow smiley face using SVG primitives within a 960×500 viewport. The face composition breaks down into discrete components: a yellow background circle with black stroke, two black eyes, and a mouth shaped by D3's `arc` generator with a fixed inner radius and a half-turn angular span. The `FaceContainer` handles the SVG wrapper and central translation. D3 v5 provides the arc geometry while React manages component state and rendering, with all face features parameterized through props like `eyeOffsetX`, `eyeRadius`, and `mouthRadius`.