GridMarket Homepage Product Listing Look for alternate theme

I am using a specific theme for my wordpress site, but I want the storefront for our site to look similar to the layout of the gridmarket homepage with the category list on the left (easy enough with shortcode) and the products on the right. I know I can use the mp shortcodes for some of this, but have not figured out how to enable the products to fill the page in the same way that the gridmarket theme represents them with multiple columns instead of one. Any assistance with this, would be great!

Joe