@function strip-unit($number) {
	@if type-of($number) == "number" and not unitless($number) {
		@return $number / ($number * 0 + 1);
	} @else {
		@return $number;
	}
}

@function to-rem($v) {
	$value: null;
	@if unit($v) == "rem" {
		$value: $v;
	} @else if unit($v) == "px" {
		$value: rem($v);
	} @else {
		$value: $v;
	}
	@return $value;
}