This example uses SVG and D3.js v5 to render a simple face composed of a yellow circle, two black eye circles, and a mouth drawn with an arc path. The circle is centered using a translated group element, while the eyes are positioned relative to the SVG’s width and height. The mouth is generated with D3’s `arc()` helper, specifying inner and outer radii and start and end angles. The code relies on d3-selection and d3-shape APIs, with data-driven attributes set explicitly rather than bound to a dataset.