Infinite scroll uses CSS selectors to identify various parts of your site’s unique theme. In most cases, identifying each of your theme’s elements below simply requires entering either the element’s ID indicated with a hashmark, (e.g.,#content), or the element’s class indicated by a period, (e.g.,.post).
Here are the CSS Selectors for Infinite Scroll to Ribbon theme by MyThemeShop
Content Selector: .article
Navigation Selector: .pagination
Next Selector: .pagination a
Item Selector: .post.excerpt