This example shows a smiley face rendered as two offset eyes and a yellow circle head with a thick black outline. The SVG is built declaratively using React components and JSX, with dimensions and positions defined as JavaScript constants. It uses React 17 and ReactDOM’s `render` method to mount the component into the DOM. All shapes are drawn with SVG `circle` elements, using attributes like `cx`, `cy`, `r`, `fill`, and `strokeWidth`, computed from the center coordinates and predefined offsets.