Fork of Smiley Face Part III
This example shows a classic smiley face rendered as an SVG graphic, with a yellow circular head, two eyes, and a curved mouth arc. The visualization is built using React for component structure and D3’s `arc()` generator to compute the mouth path geometry. The code defines fixed dimensions and positions for the face elements, then renders them inside a single SVG root using JSX, with ReactDOM mounting the component into the page.