This example shows two colored circles in an SVG canvas, with a single black line positioned below them. The circles use solid fills of orange and blue, while the line spans from an upper-left to a lower-right coordinate. The visualization is rendered entirely through inline SVG markup in the HTML body, with no dynamic data or interaction. The code imports the `select` function from D3.js to update a message div, and an ES6 module exports a greeting string.