Simplified Grid Display

I can't seem to figure out how to get my grid display of products on my primary domain page ( the same as they display on my store page ( ). Specifically I would like 4 columns of products that just display the title, image, price and add-to-cart button.

As you can see the long description is also displaying and the products display only 3 products and then 1 product in a row.

Can you please tell me what I am doing wrong?

Thank you in advance for your help,