A yellow face drawn with D3.js SVG shapes animates its eyebrows in a looping motion. The example demonstrates modular JavaScript with `import` statements from `d3` and local modules, loading D3 v7 via UNPKG. It uses `select` and `attr` to construct circles and rectangles for the eyes and brows, and the `arc` generator to create the mouth path. A `transition` chain with a 2000-millisecond duration moves the eyebrows up and down continuously.