This example renders a single large yellow circle with a black border on an SVG canvas, created using React 18 and ReactDOM. The `index.js` file defines a React component that returns SVG markup, while the companion `index.html` embeds two additional black circles within the same SVG viewport. The code demonstrates a minimal React-driven visualization setup, where the SVG elements are declaratively specified and rendered client-side. The visualization relies on React’s `render` method to inject the component into the DOM root element.