Mobile Menu Alignment

Hi, Am developing a local WP site using catch-Responsive on a child theme. Everything is updated Mobile Menu is working in Chrome developer mode Mobile menu is left justified How do I trigger the Mobile Menu to be right justified? I see the CSS float for it but I cannot find the "setting". Nothing on default-options.php I could see. Could you tell me where to switch the justification of the mobile menu or is this a Pro Setting only? Thank you