JavaFX CSS border width

import javafx.application.Application; 
import javafx.scene.Scene; 
import javafx.scene.control.Label; 
import javafx.scene.control.TextField; 
import javafx.scene.layout.GridPane; 
import javafx.stage.Stage; 

public class Main extends Application { 
    public static void main(String[] args) { 
        Application.launch(args); //from w w  w  .  j ava2s. c om
    } 

    @Override 
    public void start(Stage stage) { 
        TextField fNameFld = new TextField(); 
        Label fNameLbl = new Label("First Name:"); 

        TextField lNameFld = new TextField(); 
        Label lNameLbl = new Label("Last Name:"); 

        GridPane root = new GridPane(); 
        root.addRow(0, fNameLbl, fNameFld); 
        root.addRow(1, lNameLbl, lNameFld); 

        // Set a CSS for the GridPane 
        root.setStyle("-fx-padding: 10;" 
                + "-fx-border-style: solid inside;" 
                + "-fx-border-width: 2;" 
                + "-fx-border-insets: 5;" 
                + "-fx-border-radius: 5;" 
                + "-fx-border-color: blue;"); 

        Scene scene = new Scene(root); 
        stage.setScene(scene); 
        stage.setTitle("Using CSS"); 
        stage.show(); 
    } 
}