.add {
  display: block;
  text-align: center;
  text-decoration: none;
}

.add:disabled {
  cursor: not-allowed;
  background: #f2f0eb;
  color: #777;
  border-color: #aaa;
}

.add:disabled:hover {
  background: #f2f0eb;
  color: #777;
}