This example displays a single, centered text message using D3 version 7. It demonstrates basic D3 selection and DOM manipulation, as well as the use of local ES6 modules. The code imports the `select` function from D3 via UNPKG and a custom `message` string from a separate module, then sets the text content of an HTML div with an ID of "message". The output is a large, horizontally centered line of text with no interactive or data-driven elements.