body { font-family: Arial, sans-serif; background-color: #f4f4f4; margin: 0; padding: 0; box-sizing: border-box; } .container { max-width: 800px; margin: 0 auto; padding: 20px; background-color: #fff; box-shadow: 0 0 10px rgba(0, 0, 0, 0.1); } h1 { color: #007bff; text-align: center; margin-bottom: …