final VBox leftBar = new VBox();
leftBar.setId("border-left");
leftBar.setPrefWidth(LEFT_BORDER_WIDTH);
leftBar.setMaxWidth(LEFT_BORDER_WIDTH);
leftBar.setTranslateX(1);
Bindings.bindBidirectional(leftBar.translateYProperty(), content.translateYProperty());
Bindings.bindBidirectional(leftBar.maxHeightProperty(), content.maxHeightProperty());
final VBox rightBar = new VBox();
rightBar.setId("border-right");
rightBar.setPrefWidth(RIGHT_BORDER_WIDTH);