Smiley face part 1
This example shows a simple yellow smiley face constructed from three SVG circles: a large filled circle for the head and two smaller circles for the eyes, all with a thick black stroke. The visualization is rendered as static SVG within an HTML page, with the face centered by hard-coded coordinates. It uses React and ReactDOM in the JavaScript, though the drawing itself is plain SVG markup in the `index.html` file rather than being generated programmatically.