Product List Columns for version 8.0.4

[Paulwfc]

Hi

On a previous version of Prestashop I changed the product-list.tpl file so that it would display 4 columns instead of three. I used this website to help me out. https://belvg.com/blog/how-to-change-default-grid-in-prestashop-1-6.html

I have a new website to look at and this is on version 8.0.4. Can anyone help me find out how to change the 3 column display to 4? I have searched this forum and not found anyone else asking. Please forgive me if I have missed it.