Hello. Thank you for replying. I think I was unclear in what I am trying to do. I want to display 2 columns of products on a desktop but only one column of products on mobile devices. If I use css to set the thumbnails to 50% on desktop it affects the mobile view as well.
If I could find this line of code: <div class=”columns-3″>
and change that 3 to a 2, it all works exactly how I want.