This example displays the text “Hello HTML” centered on a plain white page, demonstrating the simplest possible starting point for a web-based visualization. The page is built entirely with static HTML and CSS, using no JavaScript libraries or external data sources. A single `<style>` block applies a 13em font size and text alignment to the body, while the content lives directly in the markup. It serves as a minimal template for uploading and hosting an HTML file in the gallery.