All JavaFX classes are mapped to CSS ones by converting their camel-case names to all lowercase letters with hyphens as word separators.
For example, GridPane will be called grid-pane in CSS and you can style all GridPane objects by adjusting the corresponding style class:
.grid-pane { -fx-background-color: lightblue; -fx-padding: 10px;}
This hyphen approach works for properties as well. For example, knowing there is a property named minWidth, you can see that the corresponding CSS style property will be named -fx-min-width.
There is also a special .root style class which refers to any layout manager used in Scene.setRoot().
Also, you can introduce your own style classes and ...
