body font-family: Arial, sans-serif; line-height: 1.6; max-width: 900px; margin: 0 auto; padding: 20px; background-color: #f9f9f9; color: #333; h1, h2, h3 color: #1a1a1a; ul list-style-type: "? "; padding-left: 20px; table width: 100%; border-collapse: collapse; margin: