Fork of Hello HTML
This example displays a single large yellow circle with a green stroke, centered on a 1000×1000 SVG canvas. It uses React 16.7.0 to render the circle, with the `ReactDOM.render` method mounting the component into a root div. The SVG circle is defined using explicit `cx`, `cy`, `r`, `fill`, and `stroke` attributes, and the code demonstrates a minimal React setup alongside an HTML page that loads React and ReactDOM from unpkg CDN links.