A yellow circle with a pink outline and a pink arc sit on an empty SVG canvas. The arc is created with D3’s `arc` generator, using an inner radius of 80, an outer radius of 100, and a sweep from 0.5π to 1.6π radians. The arc’s fill color is animated over two seconds via D3’s `.transition().duration(2000)`. The code imports `select` and `arc` from D3 v5, manipulates the SVG directly, and relies on the stylesheet for basic page layout.