This example shows a static SVG composition of a yellow rectangle containing two black squares, rendered inside an HTML page. The visualization relies on hardcoded SVG shapes defined directly in the markup, with React and ReactDOM loaded via CDN but only used to log the ReactDOM object to the console. The page imports React 16.14.0 and ReactDOM from unpkg, while the SVG elements use basic geometric attributes like x, y, width, and fill to create the simple layout.