This example renders a yellow smiley face across the full browser window using React and SVG. The code computes a center point and applies an SVG transform to center the face, drawing a large yellow circle with a black stroke as the head and two empty circles for eyes. Built with React 16.9 and the ReactDOM library, it uses window dimensions to size the graphic responsively. The composition omits a mouth, relying solely on the head and eye shapes.