Smiley Face Part 1
This example displays a stylized smiley face built entirely from SVG primitives. The face consists of a large yellow circle with a black outline, two smaller black circles as eyes, and a smile created using a D3 arc generator. The layout is computed through JavaScript variables for centering and offsets. React renders the SVG elements declaratively, while the reusable VizContainer component structures the chart by separating margins and inner drawing areas.