CSS Selectors Planographic Responsive theme

Can anyone help me with finding the proper CSS selectors to get the infinite scroll working on the Planographic Theme:

http://www.dessign.net/planographictheme/

There’s no pagination on that theme (?), but I should be able to add that myself. Any help is greatly appreciated!

http://ww.wp.xz.cn/extend/plugins/infinite-scroll/