Home Page Layout – Catch Evolution Pro

Hi, I am using Catch Evolution Pro 1.1 In home page, I need to keep the sidebar above the main content when the site is view on small screens. However, even if I use the layout with the left sidebar, the main content appear above the sidebar when the screen is small i.e. in mobiles. Could any body please tell me how I keep the sidebar on top in mobile screens? I need this just in the homepage. Many thanks, KDS.