def instart(self, *args):
anim = Animation(opacity=1, duration=1)
anim += Animation(opacity=1, duration=3)
anim += Animation(opacity=0, duration=1)
anim.bind(on_complete=self.instart)
anim.instart(self.root.ids[f"text{self.id}"])
if self.id < 4:
self.id += 1
else:
self.id -= 3
