This example demonstrates a minimal D3.js setup that renders a static text message. It shows how to load D3 from a CDN and use ES6 modules to import local code. The page uses `d3.select` to target a `div` element and set its text content to a string imported from a separate module. The styling is applied via a linked CSS file, which centers the message and sets its font size. The visualization is purely declarative, with no dynamic data or interactive behavior.