body { font-family: sans-serif; background: #f4f4f4; margin: 0; padding: 0; }
header { background: #333; color: #fff; padding: 1rem; text-align: center; }
#auction-container { display: flex; gap: 1rem; padding: 2rem; justify-content: center; flex-wrap: wrap; }
.card { background: #fff; padding: 1rem; border-radius: 5px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); width: 300px; text-align: center; }
.card h3 { margin-top: 0; }
.price { font-size: 1.5rem; color: #28a745; font-weight: bold; }
input { padding: 0.5rem; width: 60%; margin-right: 0.5rem; }
button { padding: 0.5rem 1rem; background: #007bff; color: white; border: none; cursor: pointer; border-radius: 3px; }
button:hover { background: #0056b3; }