A smiling face built from SVG shapes is drawn with D3.js v5. The yellow head, black eyes, and rectangular eyebrows are positioned using absolute coordinates in a 960×500 viewport. The left eyebrow demonstrates an animated sequence by chaining four `transition().duration(400)` calls that move it up and down vertically. The example uses D3’s selection API (`select`, `append`, `attr`) to create and style the elements, with no data binding or scales involved.