<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>YouTube Video Downloader</title> <link rel="stylesheet" href="style.css"> </head> <body> <div class="container"> <h2>YouTube Video Downloader</h2> <input type="text" id="videoUrl" placeholder="Paste YouTube video URL here..."> <button onclick="downloadVideo()">Download</button> <div id="message"></div> </div> <script src="script.js"></script> </body> </html> .container { max-width: 500px; margin: 50px auto; text-align: center; } input[type="text"] { ...