def build(self):
    self.window = GridLayout()
    self.window.cols = 1
    self.window.size_hint = (0.6, 0.7)
    self.window.pos_hint = {"center_x": 0.5, "center_y": 0.5 }
    self.window.add_widget(Image(source("logo_image.png")))


    self.ageRequest = Label(
        text = "Enter your date of birth...", 
        font_size = 50,
        color = "#ffffff",
        bold = True
    )
    self.window.add_widget(self.ageRequest)
    
    self.date = TextInput(
        multiline=False,
        padding_y = (30, 30),
        size_hint = (1, 0.7),
        font_size = 30
    )
    self.window.add_widget(self.date)

    self.button = Button(
        text = "Calculate Age",
        size_hint = (0.5, 0.5),
        bold = True,
        font_size = 30
    )
    self.button.bind(on_press = self.getAge)
    self.window.add_widget(self.button)

    return self.windo