This example demonstrates a minimal HTML page that displays the message "Hello HTML!" in large, centered text. It shows how to structure a basic document with embedded CSS and JavaScript. The page uses a `<style>` block to define a `.message` class with a font size of 13em and text alignment, applied to a `<div>` element within the `<body>`. The implementation relies solely on standard HTML and CSS, without external libraries or frameworks, and serves as a starting point for building more complex visualizations.