A yellow circle with a black outline forms the face of a smiley, while two smaller dark circles serve as eyes. The example demonstrates a step-by-step construction of a smiley face, with the face rendered via React and the eyes placed as static SVG elements. The core visualization is created using React's `ReactDOM.render` to draw the main circle with SVG attributes for fill and stroke, while the eyes exist as separate SVG circles outside the React component.