.se {
  &-fs {
    @for $i from 0 through 100 {
      &-#{$i} {
        font-size: $i + rpx;
      }
    }
  }

  &-fw {
    @for $i from 0 through 10 {
      &-#{$i} {
        font-weight: $i * 100;
      }
    }
  }
}