I was messing around in the test network environment with the Design Studio.
I didn't like the margins and paddings, so I started in the developer mode. After some changes I publish, all goes well.
Then I want to change something in the Main Design studio but that's not possible!! I loose all the changes from the developer mode!
That's ridiculous! why?
1) I don't want to do all the changes only in CSS
2) I need to be able to change things in CSS for instance to fit menu's, repeat backgrounds, change padding, ...
So for now...Design Studio is not having enough settings to tackle this, you need to be able to do both or you need a lot of advanced features added to the design studio!
It's too basic