This example presents a static SVG smiley face composed of a large yellow circle with a black outline, two smaller circles for eyes, and a mouth drawn as a semi-circular arc. The visualization is built using React and D3 v5, with dimensions and positions calculated from the width and height of the canvas. The mouth is generated using D3’s `arc()` API, which creates an SVG path for a semicircle, while the eyes and face are drawn as basic SVG circle elements.