Well, at least where residential interior design was concerned, since they're still prevalent in office design. However, many window treatment companies are claiming that these quirky curtain ...

Adding curtains to your windows is one of the quicker and less expensive home-improvement projects: The only additional supplies you’ll need are a curtain rod and (maybe) a drill and a ladder.

Take this home office curtain idea by designer Clive ... Hang curtain rods as high as possible over windows to ensure curtains are as flattering to your room's proportions, too.