Is there a way to change the stacking order?
A two column row with on the left a header + paragraph, on the right a picture (in widescreen) stacks the picture below the header + paragraph in smallscreen. I want the picture to appear above the paragraph, but underneath the header (for instance). Wonder if such a thing is possible and how.

In Responsive Layout Maker or Responsive Site Designer you can change this by using the Push & Pull feature. But emails just do not allow that much control at this time.