ONE
This example renders a single large message, “Hello HTML!”, centered on the page using a CSS class with a 13em font size. It demonstrates a bare minimum setup of HTML, CSS, and JavaScript without any external libraries. The text is styled directly in an embedded `<style>` block, and the page structure consists of one `<div>` element inside the `<body>`. The example serves as a starting point for more complex visualizations, using no data sources or rendering APIs beyond the browser’s default layout engine.