This example demonstrates basic D3.js functionality by rendering a message in an HTML page. It imports the `select` function from d3 and uses it to set the text content of a div element with the ID `message`. The text comes from a local ES6 module, `myMessage.js`, which exports a simple string. The visualization is minimal, showing how D3 can be combined with ES6 module imports and styled via CSS to display large centered text in the browser.