This example builds a stylized smiley face from a yellow circle, two eyes, and a curved mouth, all rendered as SVG shapes. React component files organize the face parts, while D3’s `arc` function generates the mouth’s path. The face is centered using an SVG transform, with the background circle’s radius calculated from the viewport height and stroke width. The code uses React to manage the SVG elements and hardcoded numeric constants for positions, sizes, and stroke properties, producing an abstract facial composition.