This example is a minimal HTML page that displays the message "Hello HTML!" centered on a white background. It demonstrates the fundamental separation of concerns in web development by using a `<style>` block for CSS presentation and inline JavaScript-free markup for content. The page pairs a `<div>` element, styled with a responsive font-size using the `em` unit, with no external libraries or frameworks. Its purpose is to serve as a clean, barebones template for creating data visualizations, with the provided React Starter link indicating it is a starting point for more complex interactive projects.