This example displays a plain HTML page with the large, centered text "Hello HTML!" styled via CSS. The code uses the basic HTML structure with an embedded `<style>` block to apply formatting to a `div.message` element. It demonstrates the minimal skeleton for a web page, utilizing the HTML `<!DOCTYPE html>` declaration and standard `<html>`, `<head>`, and `<body>` tags. No additional JavaScript libraries or data parsing are included in this bare-bones starter.