This example draws a simple smiley face using React and SVG. It renders three circles—a large yellow head with a black stroke, and two smaller black circles for eyes—positioned according to computed coordinates derived from the canvas dimensions. The code uses React 18.2 and ReactDOM to render an SVG element, with circle properties like `cx`, `cy`, `r`, and `stroke-width` defined directly in the JSX. The visualization is a static, procedural composition without external data.