antd-theme-generator/node_modules/less/test/less-bom/mixins-nested.less

This a script to generate color specific styles less file and which you can use to change theme dynamically in browser

.mix-inner (@var) {
  border-width: @var;
}

.mix (@a: 10) {
  .inner {
    height: (@a * 10);

    .innest {
      width: @a;
      .mix-inner((@a * 2));
    }
  }
}

.class {
  .mix(30);
}

.class2 {
  .mix(60);
}