Mautic 5.1.1 Landing Page format question

I’m a bit confused, how to format the text blocks. I can’t see a solution to decide if a text area is only in the middle or full wide. It depends how wide the text area above is and if pull the new in the text above or make a new section.

Can i somewhere switch from middle to full wide or back to middle wide?
(or is this part of Mautic still under construction?)