This example shows a simple yellow smiley face rendered in a circular SVG, with black eyes and a curved mouth positioned symmetrically around the center. The visualization uses D3.js v6 to append SVG elements, including circles for the face and eyes, and an arc path for the mouth, all within a 960 by 500 pixel viewport. The code imports `select` and `arc` from D3, sets up a centered group via a transform, and applies fixed pixel offsets for the facial features. Rendering is purely SVG-based with no data input, relying on hardcoded constants.