Login Form body { font-family: Arial, sans-serif; background-color: #f4f4f4; margin: 0; display: flex; justify-content: center; align-items: center; height: 100vh; } .login-container { background-color: white; padding: 20px; border-radius: 8px; box-shadow: 0 0 10px rgba(0, 0, 0, 0.1); width: 300px; text-align: center; } .login-container h2 { margin-bottom: 20px; color: #333; } .input-group { margin-bottom: 15px; text-align: left; } .input-group label { display: block; margin-bottom: 5px; color: #555; } .input-group input[type="text"], .input-group input[type="password"] { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 4px; box-sizing: border-box; } button[type="submit"] { background-color: #5cb85c; color: white; padding: 10px 15px; border: none; border-radius: 4px; cursor: pointer; font-size: 16px; } button[type="submit"]:hover { background-color: #4cae4c; } Login successful!

"; } else { echo "

Login failed. Invalid username or password.

"; // For demonstration purposes, let's create the user if not exists if (!isset(load_users()[$username])) { save_user($username, $password); echo "

User created. Please try to login again.

"; } } } ?> {}