<===> input.scss
:nth-of-type(2n-1),
:nth-of-type(2n-  1),
:nth-of-type(2n  -1),
:nth-of-type(2n  -  1),
:nth-of-type( 2n  -  1 )
{ color: red; }

<===> output.css
:nth-of-type(2n-1),
:nth-of-type(2n- 1),
:nth-of-type(2n -1),
:nth-of-type(2n - 1),
:nth-of-type(2n - 1) {
  color: red;
}