This example demonstrates a minimal D3.js visualization that renders the text “Hello D3” prominently in the browser. It uses the `select` function from D3 v6 to target the `body` element and set its text content, while the page’s styling applies a large font size for visual impact. The setup combines an HTML page with inline CSS and JavaScript, loading D3 via a CDN and bundling the main script with a separate bundle file. The visualization serves as a basic template for integrating D3 with HTML and CSS in a React-based project.