This example shows a smiling face built with SVG shapes, including a yellow circle for the head, two smaller circles for eyes, and a curved mouth arc. The visualization is rendered using React with D3’s `arc` generator to define the mouth path, while the SVG elements are positioned with fixed pixel coordinates. It demonstrates a minimal setup for combining React, D3 v7, and SVG in an HTML page, with the face drawn centered on a 960 by 500 canvas. The code does not use data-driven features, instead hardcoding geometry values.