Hi there,
you can do this with the Grid Block.
Unless you’re doing something really funky – then only use a Grid Block where it is needed.
To re-order the items on mobile, select each Grid item ( column ), in the Settings sidebar select Mobile. And under Layout you will see an Order Field.
Set the Mobile Order for each grid item, by adding a numeric value, 1 is on top, 2, 3,5
If use CSS Flexbox Order property if you want to read up more on that 🙂