body { font-family: Arial, sans-serif; background-color: #f4f4f4; margin: 0; padding: 0; line-height: 1.6; } header { background-color: #333; color: #fff; padding: 10px 0; text-align: center; } h1 { margin-top: 20px; color: #333; } h2 { color: #444; margin-top: 20px; } h3 { color: #555; margin-top: …