This example shows a minimal web page that embeds D3.js and custom JavaScript in an HTML file, displaying a large centered text message and logging output to the console. The page uses CSS for styling the message text and loads D3 v7 from a CDN via a script tag. The code imports the `select` function from D3 and a custom exported constant from a separate JavaScript module. Everything runs in plain HTML without a framework, demonstrating basic integration of ES modules with a browser environment.