private void doAesthetics() {
        setSize(new Dimension(800, 800));
        setResizable(false);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setLayout(new BorderLayout());

        doMenubar();

        mainPanel.setLayout(new BorderLayout());
        mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
        mainPanel.add(grid);

        add(mainPanel);
    }