This example displays a static, centered "Hello HTML!" message using plain CSS styling, with the text rendered in a large 13em font size. The page demonstrates a minimal structure with a standalone HTML file containing embedded CSS in a `<style>` tag and JavaScript omitted from the visible code. It uses no external libraries or data sources, relying solely on the browser’s built-in rendering of HTML and CSS. The example serves as a baseline for understanding how to combine markup and styling in a single document.