This example shows a minimal HTML page that displays a large “Hello HTML!” message centered on the screen. It demonstrates the basic structure of combining HTML, CSS, and JavaScript in a single file, with the styling applied through a CSS class. The page loads D3 v7 from a CDN and includes a separate JavaScript module that imports a value from another file and logs it, along with the D3 `select` function, to the console. The visualization itself is static text, not a chart.