CaptainCSS helps provide a common language for layout objects, making them easier to talk about.
One of CaptainCSS' core concepts is to provide a shared language for common, repetitive layout objects and compositions.
Naming concepts and patterns is what makes them easy to talk about. Without a common name, developers would need to re-explain a particular concept each time they wanted to talk about it, or risk not being on the same page.
It's the same principle for why design patterns have names like Dependency Injection or Containers. If you know about them, you can talk about them without explaining them. If you don't know about them, it's easy to google as there's lots of articles on the subject using the same name.
And we hope they help you to talk about these compositions with other developers and your own teams.
Have a look through the Layout Objects section of the documentation to see common objects such as the Wrapper, the Stack or the Cluster.