This example shows a plain HTML page with the text “Hello HTML!” displayed in large, centered type. It serves as a minimal starter template for D3-based projects, demonstrating how to structure a basic document without any JavaScript logic or data binding. The page uses standard CSS styling within a `<style>` block to set the font size and text alignment, and a single `<div>` element with the class `message` to hold the content. No external libraries are loaded, making this a pure HTML and CSS demonstration.