I’ve created a flexible content with different layouts.
Each layout including one custom field.
Target : I set some width as attributes for each of these custom fields (50%, 100%, 58% (7 col)), but when I switch to a Post (on the back-office), it’s setting the width of this at 100% as it’s the Layout width.
This is only to make a more intuitive back-office for my customers.
The width you are setting only affect the width of a field within the layout and it will only effect how all the fields in that layout will look. There isn’t a way to have the layouts themselves have different widths.