<VScrollable X="250" Y="350" Height="100">
      <VStack>
        <Label Text="123"/>
        <Border>
          <TextBox Width="250"/>
        </Border>
        <Border>
          <TextBox Width="250" Height="50" Multiline="True"/>
        </Border>
        <Label Text="456"/>
        <Border>
          <CheckBox Text="Hello World"/>
        </Border>
      </VStack>
    </VScrollable>

So TextBox, with no height specified, automatically sizes to one line height. Border can now contain controls instead of just sitting behind them, and will automatically size to its contents and pad them appropriately. The VStack will line these all up vertically. Finally, the VScrollable will wrap it all in an area with a scrollbar.