This example demonstrates a minimal D3.js visualization that displays a centered text message. It loads D3 version 5 from a CDN via UNPKG and uses the `select` function to target the HTML element with the ID `message`, setting its text content to “Hello VizHub!”. The code also imports a local ES6 module from `myMessage.js` and applies styling through an external CSS file, centering the text with a large font size.