This example uses D3.js v5 to draw a simple cartoon face as an SVG, comprising a yellow circle head, two eyes, rectangular eyebrows, and an arc-based mouth. The face is centered within a 960×500 viewport using an SVG group transform. The eyebrows animate upward and back down over two seconds each way using chained `transition().duration()` calls. The mouth is generated with D3’s `arc()` geometry, while static shapes are created via `select`, `append`, and attribute setters.