main.kv

<RootWidget>:
    vlayout: vlayout

    BoxLayout:
        status: status
        top_layout: top_layout
        low_layout: low_layout

        id: vlayout
        orientation: 'vertical'

        BoxLayout:
            status: status
            left_icon: left_icon
            left_status: left_status
            right_status: right_status

            id: top_layout

            BoxLayoutB:
                id: left_status
                bcolor: 1, 1, 1, 1

                Image:
                    id: left_icon
                    source: 'img/martini.png'


            Label:
                id: status
                text: 'Age: [b]?[/b]'
                font_size: 40
                markup: True
                #size_hint_y: None
                #text_size: self.width, None
                #height: self.texture_size[1]
                #text_size: self.size

            BoxLayoutB:
                id: right_status
                bcolor: 1, 1, 1, 1

                Image:
                    id: right_icon
                    source: 'img/smoking.png'

        BoxLayout:
            status: status_low

            id: low_layout
            orientation: 'horizontal'
            

            Label:
                markup: True
                id: status_low
                text: 'Scan License now'
                font_size: 40


<BoxLayoutB>:
    bcolor: 1, 1, 1, 1
    canvas.before:
        Color:
            rgba: self.bcolor
        Rectangle:
            pos: self.pos
            size: self.size