A smiley face rendered as two black eyes on a yellow circular head, built with React 16.9 and SVG. The component defines fixed dimensions for the canvas, calculates the face’s center, and uses offset constants for eye positions, with stroke width and radius as explicit variables. It renders three circles: a yellow outer circle with a black stroke, and two smaller black eyes placed symmetrically around the center. The code uses ReactDOM to mount the component into a root element, with styling that hides page overflow.