.libreria {
  background: white;
  padding: 1rem 2rem;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  width: 300px;
}

.libreria h2 {
  margin-top: 0;
  font-size: 1.2rem;
  color: #333;
}

.libreria p {
  font-size: 0.9rem;
  color: #555;
  margin: 0.5rem 0 1rem 0;
}

.libreria select {
  margin-bottom: 0.5rem;
  padding: 0.3rem;
  width: 100%;
  font-size: 1rem;
}

.links a {
  text-decoration: none;
  color: #4CAF50;
  font-weight: bold;
  margin-right: 0.5rem;
}

.links a:hover {
  text-decoration: underline;
}