This example displays a single embedded YouTube video within a bare-bones HTML page titled “Fork 123 of Hello HTML.” The page contains no interactive data visualization; instead, it relies on an `<iframe>` to load the video player from YouTube’s embed API. The code uses standard HTML elements (`<h1>`, `<body>`, `<iframe>`) with no external JavaScript libraries or rendering techniques. The visualization is static, showing only the video player and heading text as its entire content.