This example shows a stylized smiley face built from simple SVG shapes, with eyes, eyebrows, and a mouth arranged symmetrically around a yellow circular head. The face is rendered using React components that compute arc paths with `d3.arc`, specifying inner and outer radii and start/end angles for the eyebrows and mouth. The SVG is centered via a group transformation, with hardcoded offsets for eye placement and a black outline drawn with a stroke-width attribute.