Prompt: Develop a "YouTube Thumbnail Downloder" web page using HTML, Tailwind CSS, and JavaScript, ensuring that the entire project is contained within a single HTML file. You may include
necessary CDN links (like Tailwind CSS or lightweight libraries) directly in the <head> section, but no external
project files are allowed. Focus on building a fully responsive, modern, and clean UI that offers a seamless and intuitive user experience across all devices.