Multiple CSS attributes in developer settings

Hi Enfold Community,

I’m completely new to Enfold and very satisfied. Thanks for this great theme. I tried to adopt some settings from the docu-section regarding grid rows.

https://kriesi.at/documentation/enfold/grid-row/#toggle-id-2

I’d like to combine all of the examples for a grid row item, but I don’t know how to set multiple CSS attributes or classes.
e.g. #grid-custom-width and #top .flex_cell for the grid row in developer options under “user defined id-attributes”.

Do I need a seperator or isn’t it possible to use multiple attributes?

kind regards

Achim