.favorite-button {
  cursor: pointer;
  background-color: #ffefef;
  color: #c00;
  padding: 8px 16px;
  border-radius: 10px;
  font-weight: bold;
  display: inline-block;
  margin-top: 16px;
  transition: 0.3s;
}
.favorite-button.added {
  background-color: #ffe0e0;
  color: #555;
}