html, body { background-image: url(https://images4.alphacoders.com/206/206014.jpg); } article { margin-bottom: 40px; } footer { background-color: #333; color: white; text-align: center; padding: 20px; } img { display: block; margin: 0 auto; max-width: 100%; height: 400; border-radius: 10px; }