HBox and VBox containers are used to layout the containers nested within them either horizontally from left to right (HBox) or vertically from top to bottom (VBox).
Containers are packed in the HBox or VBox container in the order in which they
appear in the structure. By combining HBox and VBox layouts for various containers, you
can align the containers of your form in any way you choose.
Example
Figure 1. HBox Layout Container
Example
Figure 2. VBox Layout Container