This example demonstrates a minimal HTML page that displays the text “Hello HTML!” centered on the screen. The page uses a CSS class to set the font size to 13em and align the text in the middle. JavaScript is not used in the code, as the page relies purely on static HTML and CSS for its rendering. The styling is defined in a `<style>` block within the `<head>` section, while the content lives in a `<div>` element in the body.