This example is a minimal HTML page that renders a centered “Hello HTML!” message using a CSS style rule and JavaScript. It demonstrates the basic structure of an HTML document, with a `<style>` block defining a `.message` class that sets the font size and text alignment, and a `<div>` element applying that class. The page relies on standard HTML, CSS, and JavaScript functionality without any external libraries or frameworks, serving as a starting point for building more complex visualizations.