<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Connection failed</title> <style> body { display: flex; align-items: center; justify-content: center; height: 100vh; margin: 0; } .container { text-align: center; } </style> </head> <body> <div class="container"> <h1>Connection failed</h1> <p>Something went wrong.</p> </div> </body> </html>