body { font-family: 'Arial', 'Hiragino Sans', sans-serif; line-height: 1.6; color: #333; margin: 0; padding: 0; background-color: #f4f4f4; } .container { max-width: 800px; margin: 20px auto; background-color: #fff; padding: 20px; box-shadow: 0 0 10px rgba(0, 0, 0, 0.1); } h1, h2, h3 { color: #0056b3…