//The ultimate PX/REM mixin
//http://hugogiraudel.com/2013/03/18/ultimate-rem-mixin/

@function parseInt($n) { /* [2] */
  @return $n / ($n * 0 + 1);
}

@mixin rem($property, $values) {
  $px : (); 
  $rem: ();
  
  @each $value in $values { /* [4] */
   
    @if $value == 0 or $value == auto { /* [5] */
      $px : append($px , $value);
      $rem: append($rem, $value);
    }
    
    @else { 
      $unit: unit($value); /* [6] */
      $val: parseInt($value); /* [6] */
      
      @if $unit == "px" { /* [7] */
        $px : append($px,  $value);
        $rem: append($rem, ($val / 10 * 1rem));
      }
      
      @if $unit == "rem" { /* [7] */
        $px : append($px,  ($val * 10 * 1px));
        $rem: append($rem, $value);
      }
    }
  }
  
  #{$property}: $px;  /* [8] */
  #{$property}: $rem; /* [8] */
}