body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 800px; margin: 0 auto; padding: 20px; } h1, h2, h3 { color: #2c3e50; } img { max-width: 100%; height: auto; display: block; margin: 20px auto; } .highlight { background-color: #f0f8ff; border-left: 5px solid #4682b4; …