Container component

The container component pattern was introduced a long time ago and was popularized within the React community by Dan Abramov. So far, we have created one container component when we refactored the contents of the App component to become a presentational component. It turns out that the App component became a container component—it contains the HelloBox component and implements the necessary logic for it. What did we gain from this approach?  We gained the following:

• We can implement expanding and collapsing in a different way and reuse the markup of the HelloBox component
• HelloBox does not contain logic
• The container component encapsulates logic and hides it from the other components