Question

I want to display upsell product in cart page. The products are displayed the one under the other. I want to display them in line (3 products), exactly 3 products.
Please help me to change this way.

Answer

First, Install Ultimate Upsell

Create a new upsell or edit an existing upsell. Click on the SETUP link next to the location you want to display the upsell at.

Inside the SETUP tool, you can select 3 columns, instead of 1 column.