This example shows a minimal HTML page displaying the text “Hello HTML” centered in the browser with a font size of 13em. It uses plain HTML with embedded CSS in a `<style>` tag to control the body’s alignment and typography. No external libraries or data sources are involved, relying solely on native markup and styling. The page serves as a bare-bones starting point for embedding visualizations, illustrating the simplest possible document structure without any JavaScript or interactive behavior.