@Override
  public void render(float delta) {
    // Borrar la pantalla
    Gdx.gl.glClearColor(0, 0, 0, 0);
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

    batch.setProjectionMatrix(camara.combined);

    // DIBUJAR
    batch.begin();
    fondo.render(batch);
    btnMenu.render(batch);
    btnContinue.render(batch);
    batch.end();
  }