CSS :not() selector. Apply style if parent does not exist

Question

I am trying to apply a style to a div based on its parent class. I am using the :not() selector to select the div whose parent is not .container1, the second di

Answer 1

CSS can't do "parent lookups" like that. You would need to reverse the structure to something like:

.my-container:not(.container1) .myDiv

Granted, you would need to add the shared my-container class to all "parent" divs of interest.