Visually differentiate between lists/columns

[Dunrar]

trafficstars

Feature Request

There really should be some visual differentiation between lists/columns.

Is your feature request related to a problem? Please describe. Right now it looks like cards more or less just hover in an empty space, with no indication given that they belong to a column and are supposed to be dragged between them. I'm all for minimalist design but it should never come at the expense of usability.

Additional context I think I read a discussion where the Nextcloud design guidelines were given as a reason for not doing this, but I can't find it anymore. If I have not imagined said discussion, I would like to add that I don't think that this is a sufficient reason at all to not at least add a very subtle visual differentiation. Maybe how widgets in the Nextcloud Dashboard app are designed could be used as a reference.