body { font-family: sans-serif; margin: 0; padding: 0; }
header { background: #f4f4f4; padding: 1rem; }
nav ul { list-style: none; padding: 0; display: flex; gap: 1rem; }
main { padding: 2rem; }
footer { background: #333; color: #fff; text-align: center; padding: 1rem; position: fixed; bottom: 0; width: 100%; }
.artwork-placeholder { border: 1px dashed #ccc; padding: 2rem; background: #eee; text-align: center; margin-top: 1rem; }
img { max-width: 100%; height: auto; }