This example shows a stylized smiley face rendered in SVG, with a yellow-to-orange gradient fill, elliptical eyes, and a rounded smile formed from three arcs. It builds on the previous “Smiley face” versions by adding a d3.arc-generated mouth and small smile arcs positioned with rotations and translations. The code uses React components and the D3 v7 `arc` API from the `d3` module to draw the mouth and smile shapes, while `use` references a gradient-defined circle from the SVG `<defs>`.