css-atoms/src/less/z-index-atom.less

A legal way of doing inline css

.z-index(@list, @separator) {
  .loop(@index) when (@index > 0) {
    @pair: extract(@list, @index);
    @key: e(extract(@pair, 1));
    @value: extract(@pair, 2);
    @important-flag: e(extract(@pair, 3));

    .z@{separator}@{key} {
      z-index: @value @important-flag;
    }

    .loop(@index - 1);
  }

  .loop(length(@list));
}

.z-index(@z-index-list, @z-index-separator);