This example displays the text "Hello HTML" centered on a white page, styled with inline CSS to set a large font size and text alignment. It serves as a minimal demonstration of embedding JavaScript directly within an HTML document, logging "Hello JavaScript!" to the browser’s developer console. The code uses no external libraries, relying solely on native HTML, CSS, and JavaScript APIs. It highlights the basic structure of a self-contained web page, making it a straightforward starting point for beginners.