#gmp-purchase-toggle label {
  border:2px solid #ddd;
  padding:12px;
  margin-right:10px;
  cursor:pointer;
  display:inline-block;
}
#gmp-purchase-toggle input:checked + label {
  border-color:#ff6600;
  background:#fff3e6;
}
.gmp-child {
  border:1px solid #eee;
  padding:15px;
  margin-top:15px;
}