.card.narrow { 
  max-width: 350px; 
  margin: auto; 
}

.example {
  margin-top: auto;
  padding: 8px 12px;
  background: #f9fafb;
  border-left: 3px solid #2563eb;
  border-radius: 6px;
  font-size: 0.9em;
  color: #374151;
}