import java.util.List;

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class Test extends Application {
    public static void main(String[] args) {
        Application.launch(args);
    }


    @Override
    public void start(Stage stage) {
        var items = FXCollections.observableArrayList(List.of("a", "b"));
        var combobox = new ComboBox<String>();
        combobox.setItems(items);

        var vBox = new VBox(combobox);
        vBox.setStyle("-fx-font-size: 15");
        vBox.setAlignment(Pos.BOTTOM_LEFT);

        Scene scene = new Scene(vBox, 600, 200);
        var css= this.getClass().getResource("test.css").toExternalForm();
        scene.getStylesheets().add(css);
        stage.setScene(scene);
        stage.show();
        stage.setMaximized(true);
    }


}