This example displays the text “Hello HTML” in a large, centered style on a plain web page. It demonstrates the fundamental structure of an HTML document, including the `<!DOCTYPE html>` declaration, a `<head>` section with a title and embedded CSS, and a `<body>` containing the main content. The code uses standard HTML tags and inline CSS within a `<style>` block to set the text alignment and font size. It serves as a minimal starting point for building more complex visualizations with React or other frameworks.