This example displays the message "Hello HTML!" in large, centered text on a plain web page. It is a minimal demonstration of fundamental web technologies, with the visual styling handled by a CSS rule that sets the font size and text alignment. The page’s structure is defined in `index.html`, which contains a single `<div>` element with the class `message`. The example does not use any JavaScript libraries or external data sources, serving purely as a starting point for building more complex interactive visualizations.