This example renders a stylized cat smiley face using React, D3.js v7, and SVG. It shows a yellow circular face with purple ears, orange eyes with pupils, and a purple mouth, all composed of geometric primitives and arcs. The code builds the mouth and ears with `d3.arc`, while eyes and eyebrows use circles, ellipses, and lines, with transforms rotating and positioning each part. The entire drawing is centered via a single SVG group and rendered declaratively through React components.