This example demonstrates the simplest possible web page structure, showing how HTML, CSS, and JavaScript combine to render content in a browser. The page displays a single "Hello HTML!" message inside a div, styled with a large heading font size defined in the SCSS file. The markup uses a standard `<!DOCTYPE html>` declaration and a minimal `<head>` with a title. No frameworks or libraries are imported; the code relies solely on native HTML elements and CSS rules to achieve its basic visual output.