White Partitions as walls?

[InkstainedGwyn]

I've seen images of people that use white partitions as walls in their entire house/apartment in an array of colors. Is there a way to get them completely flush to the wall so they don't stick out at all? Like some sort of glitch? Or is the payoff of doing that is that you have a smaller space.

You can drop them straight from the storage to get them closer but that's very hard to line up because you can't move them after (but you can rotate them). Usually they just sacrifice some space to do that trick.