I read about table layout in lightning here: https://www.lightningdesignsystem.com/guidelines/layout . However I could not find documentation about how to implement same. Does salesforce expose CSS classes for same? Can someone point to any documentation available for this?

If the subscriber org has a profile with some permissions on a custom object (custom object from managed package). If we upgrade package, does the permissions get overwritten? And is it same behaviour with package uninstall and re-install?

If the subscriber org has a profile with some permissions on a custom object (custom object from managed package). If we upgrade package, does the permissions get overwritten? And is it same behaviour with package uninstall and re-install?