body { background-color: #f7f7f7; font-family: "Yu Gothic", sans-serif; margin: 0; padding: 20px; color: #333; } .container { max-width: 800px; margin: auto; background: #fff; border-radius: 10px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); padding: 30px; line-height: 1.8; } h1, h2 { color: #d32f2f; bor…