button padding in javafx code example

Example: javafx change button background color

/*can address these properties: */
-fx-border-width
-fx-border-color
-fx-background-color
-fx-font-size
-fx-text-fill

/*	see source for more examples
	see JavaFX CSS Reference Guide for additional properties:
	https://docs.oracle.com/javafx/2/api/javafx/scene/doc-files/cssref.html
*/