Want columns to stack on tablet

I see a lot of posts on how to un-stack columns, but I’d like to know how to stack a column on a tablet.
I have a 2 column layout that looks great on my laptop, but crappy on anything smaller (one column is a video and isn’t resizing well).

I’d like it to stack like on medium screens, just like it does on small screens.

See page here:

I am looking to accomplish the same thing. Would love to see @beaverbuilder make it as easy to set column stacking for Tablet as it is for more. Other page builders allow for this. ITMT would like to get a solve for this.