.cnu-dropdown .Select-menu-outer .Select-option:nth-child(1),
.cnu-dropdown .Select-menu-outer .Select-option:nth-child(2),
.cnu-dropdown .Select-menu-outer .VirtualizedSelectOption:nth-child(1),
.cnu-dropdown .Select-menu-outer .VirtualizedSelectOption:nth-child(2) {
  display: inline-block;
  width: 50%;
  box-sizing: border-box;
}

.cnu-dropdown .Select-menu-outer .Select-option:nth-child(1),
.cnu-dropdown .Select-menu-outer .VirtualizedSelectOption:nth-child(1) {
  border-right: 1px solid #e2e2e2;
}