This example demonstrates how to structure a minimal D3.js visualization using ES6 modules. It imports the `select` function from D3 to update the text content of an HTML element, while also importing a `message` string from a separate local module. The page loads D3 v5 from the UNPKG CDN and uses a stylesheet to center and scale the displayed text. The visualization itself is a static text message, but it serves as a foundational template for modular D3 code organization.