Hello HTML
A smiling face rendered as SVG circles and arcs, assembled from reusable React components. The face uses a yellow background circle, black-outlined eyes with white and dark highlights, and a curved mouth drawn with a D3 arc generator. Components like `FaceContainer` and `Face` compose the SVG structure, while props control dimensions and positions. The example demonstrates combining React for UI composition with D3's `arc` API for path generation.