New Engine, is this possible? Have all columns fill the width of the parent RG?

[Sarah_Esteve]

I share there the solution I found to do what I was searching for to do :

2 columns becoming 1 one mobile (new engine)

Hey there, I’m using the new responsive engine, and searching how to make a Full width RG with 2 columns, that becomes 1 colum on mobile screen. Maybe someone out there will have an idea ! Thank you