/***
 * Pixels to Rems function
 *
 * Converts pixels to REMs so we can keep our units consistent.  Assumes 1rem is 16px (default for most browsers).
 *
 * scss:
 *   pxToRem($px[,$baseRem]);
 *
 * @param $px - unitless integer to convert to rems
 * @param $baseRem - pixels to count as one rem. Defaults to 16
 */
@function pxToRem ($px, $baseRem: 16) {
  // converts pixels to rems based on the $base-rem variable
  @return 1rem * stripUnits($px) / $baseRem;
}