<ModalView>:
    ScrollView:
        pos_hint: {'center_x':0.5}
        FloatLayout:
            canvas:
                Color:
                    rgba: 1,0,0,0.5
                Rectangle:
                    size: self.size
                    pos: self.pos
            size_hint: None,None
            size: 500,500
            pos_hint: {'center_x':0.5}