wxhuanart/miniprogram/components/col/col.less

.ColCalc(1,24);

.ColCalc(@index, @maxIndex) when (@maxIndex >= @index) {
  @nowwidth: (@index / 24 * 100%);

  .n-col-@{index} {
    width: @nowwidth;
  }
  .ColCalc(@index + 1, @maxIndex);
}

.n-col {
  float: left;
  box-sizing: border-box;
  position: relative;
}