@function slice($list, $start: 1, $end: length($list)) {
	$result: ();
	@if $start < 0 {
		$start: length($list) - abs($start) + 1;
	}
	@if $end < 0 {
		$end: length($list) - abs($end) + 1;
	}
	@for $i from $start through $end {
		$result: append($result, nth($list, $i));
	}
	@return $result;
}