This example shows a yellow smiley face rendered as an SVG graphic. The face is drawn using a large circle for the head, two smaller circles for the eyes, and an arc for the mouth, all positioned relative to a central point. Built with React and D3, the code uses D3’s `arc` generator to define the mouth’s path and React’s `ReactDOM.render` to construct the SVG elements. The layout is computed dynamically from fixed width and height constants.