.card-header {
  background-color: #f2f2f2;
}

.card-header button {
  color: #2a7c82;
  text-decoration: none;
}

.card-header button:hover {
  color: #1e6b70;
  text-decoration: none;
}

.card-header button:focus {
  outline: none;
  border: 0;
}