This example shows a simple web page that displays the message “Hello HTML!” in large, centered text. It demonstrates how to structure a basic HTML document with embedded CSS for styling and a reference to JavaScript libraries. The page loads React and ReactDOM from CDN links using script tags, though the React libraries are not actually used to render content; the message is a static div element with a class that applies the font size and alignment. The styling uses a 13em font-size to make the text prominent.