Hi,
You would need to use the below media query to target the mobile screens and alter the css for the block/blocks you need to set on two columns so that it would behave like you want it to when your site is accessed from a maximum 767px screen width.
I suggest altering the css for blocks 7/8 which have the smallest thumbnails.
This needs custom work and you would have to do this yourself or get some to do it for you as we cannot offer custom work as we work hard on the development, updates, fixes and support. You can always get a freelancer from sites like: http://studio.envato.com/
Here is the media query you need to target the mobile screens and apply your changes to the css code:
/* responsive phone */
@media (max-width: 767px) {
place your css code here..
}
Hope this helps!
Thanks
