This interactive SVG visualization renders a smiley face whose eyebrows move, demonstrating fundamental DOM manipulation with D3.js v5. The code uses d3.select and d3.arc to construct the facial features, while the animation of the eyebrows is driven by direct DOM element updates. The example loads data from an external bundle.js script and applies styling from a separate stylesheet, with the SVG canvas sized at 960 by 500 pixels.