A yellow face with black-outlined features repeatedly raises and lowers its rectangular eyebrows while a fixed smile arc remains below. The animation, built with D3.js, uses `transition().attr()` to cycle the eyebrow group's vertical position over two-second intervals. The face is constructed from SVG primitives—circles for eyes, rects for brows, and a path generated by `d3.arc()` for the mouth—all centered within an SVG canvas. The rendering is purely code-driven, with no external data source.