Face d3
Face d3 renders a simple, static SVG face: a yellow circle outlined in black, with two smaller circles as eyes. The example demonstrates using raw SVG elements inside an HTML page while integrating React, with the `ReactDOM.render` method mounting a basic component, though the current component only outputs a heading. The face itself is drawn directly with SVG `<circle>` tags, positioned via hard-coded `cx` and `cy` attributes, and uses no data input or interactive behavior. The pure SVG markup sits alongside the React setup, showing a minimal foundation for combining the two.