private static @NotNull CustomLineBorder createMainBorder() {
    return new CustomLineBorder(JBColor.border(), JBUI.insetsTop(1)) {
      @Override
      public Insets getBorderInsets(Component c) {
        return JBUI.insets(15, 20, 0, 20);
      }
    };
  }
private static @NotNull CustomLineBorder createMainBorder()