Translations:Theme editor/226/en
From LimeSurvey Manual
If you want LimeSurvey to change the appearance of every second page (i.e. of even and odd survey pages) you can use .page-odd class in your css file to change the appearance of odd pages.
If you want LimeSurvey to change the appearance of every second page (i.e. of even and odd survey pages) you can use .page-odd class in your css file to change the appearance of odd pages.