body { font-family: Arial, sans-serif; background: #f9f9f9; color: #222; margin: 0; padding: 0; }
header, footer { background: #111; color: #fff; padding: 1.5rem; text-align: center; }
main { padding: 1rem 2rem; max-width: 900px; margin: auto; background: #fff; border-radius: 8px; }
a { color: #0066cc; text-decoration: none; }
a:hover { text-decoration: underline; }
img { width: 100%; max-width: 300px; display: block; margin: 1rem auto; border-radius: 8px; }