/**
 * Power operator for SASS!
 *
 * NOTE: This is an internal function. It shouldn't be documented
 */
@function pow($number, $exponent) {
  $value: 1;

  @if $exponent > 0 {
    @for $i from 1 through $exponent {
      $value: $value * $number;
    }
  } @else if $exponent < 0 {
    @for $i from 1 through -$exponent {
      $value: $value / $number;
    }
  }

  @return $value;
}

/**
 * Convert em to px
 */
@function px($em, $context: 16) {
  @return ($em / 1em) * $context;
}