code: function undoIOSfix() {
    if (hasClass(document.body, swalClasses.iosfix)) {
      var offset = parseInt(document.body.style.top, 10);
      removeClass(document.body, swalClasses.iosfix);
      document.body.style.top = '';
      document.body.scrollTop = offset * -1;
    }
  }
docs: /* istanbul ignore next