Stacking columns

I think the columns block is great however, most likely because of my OCD, I have an observation for when the columns are stacked on a smaller screen.

You see, when the columns are side by side the block looks nice and everything is symmetrical.

But when stacked … not quite as nice. I think when stacked the columns should be aligned central to the page space so that they are centrally underneath each other.

The page I need help with: [log in to see the link]