.btn-prepack {
  color: #fff;
  background-color: #8977ad;
  border-color: #5f4b8b; }

.btn-open_pack {
  color: #fff;
  background-color: red;
  border-color: #5f4b8b; }

.btn-optimized_pack {
  color: #fff;
  background-color: green;
  border-color: #5f4b8b; }