newICSS/src/components/NumberUnitDrop/index.less

@import "~@less/variables.less";
.container{
  .tag;
}
.no-tag{
  .no-tag;
}
.selected{
  .selected-tag;
  &:before{
    content: unset;
  }
  &:after{
    content: unset;
  }
}
.blued{
  background: @blue;
  color: #fff;
}