Finding CSS Selectors for the Point theme

I’ve been trying to find the right CSS selector settings for the Point Theme. http://demo.mythemeshop.com/point/

Here’s what I’m trying without pagination selectors

Content Selector: #content
Navigation Selector: #pagination
Next Selector: #pagination .nav-previous
Item Selector: #content .article

Anyone have success implementing this theme? Or could point me in the right direction. I’m very new to wordpress

https://wordpress.org/plugins/infinite-scroll/