Generated by SassMeister.com.

SassMeister-input.scss

// ----
// libsass (v3.2.5)
// ----

@mixin nestedElements($element-type, $property, $values)
{
  $selector: $element-type;
    
  @for $i from 1 through length($values)
  {
    #{$selector}
    {
      #{$property}: nth($values, $i);
    }
    
    $selector: append($selector, ">");
    $selector: append($selector, $element-type);
  }
}

@include nestedElements(mark, background-color, red orange yellow green blue indigo violet);

SassMeister-output.css

mark {
  background-color: red;
}

mark > mark {
  background-color: orange;
}

mark > mark > mark {
  background-color: yellow;
}

mark > mark > mark > mark {
  background-color: green;
}

mark > mark > mark > mark > mark {
  background-color: blue;
}

mark > mark > mark > mark > mark > mark {
  background-color: indigo;
}

mark > mark > mark > mark > mark > mark > mark {
  background-color: violet;
}