Reverse column stacking order

I was wondering if there was a way to reverse the stacking order of the columns on the mobile version of a form?

For example, here’s a desktop:

—————— ——————
| Name | | |
| Email | | Image |
| Submit | | |
—————— ——————

Mobile (correct):

——————
| |
| Image |
| |
——————
——————
| Name |
| Email |
| Submit |
——————

Mobile (incorrect):

——————
| Name |
| Email |
| Submit |
——————`
——————
| |
| Image |
| |
——————`
Many thanks!

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