A minimal web page that displays the static text "Hello HTML World" followed by "Test" in the browser, centered on a blank canvas with the font size dramatically enlarged to 13em. The example demonstrates the foundational structure of an HTML document, using a plain `<style>` block to apply CSS styling directly within the page. No external libraries or JavaScript are involved; the rendering relies entirely on the browser's native HTML parsing and CSS layout engine, making it a basic starter template for web-based projects.