E-commerce widget too wide

Hallo and congrats you for your great job supporting the community!
I have this problem:

https://www.agrycult.com/store/?previ…=0&sort=normal

As you can see the column of the e-commerce plugin (Ecwid) is a little bit wider than the white area usually reserved for blog posts.
I successfully removed the sidebar creating a new template for that page, but I still need help in “extending” the white part (sorry I don’t know how it is called) of the page in order to include fully the Ecwid column.
I looked in the forum but found no answer. Can you help?

Thank you.

Michele