This example shows a yellow smiley face centered on a full-screen SVG canvas, with two black eyes and no visible mouth. The face is drawn responsively based on the browser window’s width and height, using React to render SVG circle elements. It relies on the `react` and `react-dom` libraries to mount the component into the DOM, with hardcoded offsets for eye placement and radii for the face and eyes. The code also includes commented-out static SVG markup for reference, though the active version uses dynamic React props.