Glad it worked out for you @T-low, thanks for letting me know!
For the Relative Styling combinator, I suggested you to use the child one instead of the descendant one to target explicitly (and only) the sections’ inner wrapper and not any nested div inside the section.
Another solution would be to simple target the . .cc-wrapper class.
Instead of type, just use class as a Relative Styling type.
When targeting the inner wrappers’ class, you can consider to revert back to the descendent Relative Styling combinator (unless you plan to place sections inside sections, which hopefully isn’t the case).
Custom CSS only makes sense if you want to explicitly use it or if the required CSS property is not available inside the block inspector’s Relative Styling panel, which very rarely is the case.
In this case, you want to use .globalclass .cc-wrapper, not only .cc-wrapper.
The .globalclass selector automatically translates to your actual global class’ name (.my-section-class). So in case you decide to change the global class’ name at some point, you don’t have to modify the custom CSS.
Let me know in any case if you need further guidance.