device_info_list_item.kv

<DeviceInfoListItem>:
    heading_label: heading_label_
    content_label: content_label_
    size_hint_y: None
    height: heading_label_.height + content_label_.height
    pos_hint: {'center_x': 0.5, 'center_y': 0.5}
    _no_ripple_effect: True

    MDRelativeLayout:
#        orientation: 'vertical'
        size_hint_y: None
        height: heading_label_.height + content_label_.height
        pos_hint: {'center_x': 0.5, 'center_y': 0.5}
        radius: dp(10), dp(10), dp(10), dp(10)
        md_bg_color: app.theme_cls.bg_normal

        MDLabel:
            id: heading_label_
            size_hint_y: None
            height: self.texture_size[1]
            text_size: (self.width, None)
            pos_hint: {'top': 1}
            halign: 'left'
            font_style: root.font_style
            theme_text_color: root.theme_text_color
            text_color: root.text_color
            padding: dp(20), dp(15), dp(10), dp(10)

        MDSeparator:
            # MDSeparator is a BoxLayout
            orientation: 'horizontal'
            size_hint_x: 0.9
            pos_hint: {'center_x': 0.5}
            center_y: heading_label_.y

        MDLabel:
            id: content_label_
            size_hint_y: None
            text_size: (self.width, None)
            height: self.texture_size[1]
            pos_hint: {'bottom': 0}
            halign: 'right'
            shorten: False
            font_style: root.secondary_font_style
            theme_text_color: root.secondary_theme_text_color
            text_color: root.secondary_text_color
            padding: dp(10), dp(10), dp(20), dp(15)
        MDSeparator:
            height: dp(4)