<LumexCheckboxGroup Size="@Size.Medium">
    <LumexCheckbox Size="@Size.Large" Value="@true">A</LumexCheckbox>
    <LumexCheckbox Value="@true">B</LumexCheckbox>
    <LumexCheckbox Value="@true">C</LumexCheckbox>
    <LumexCheckbox Value="@true">D</LumexCheckbox>
    <LumexCheckbox Value="@true">E</LumexCheckbox>
</LumexCheckboxGroup>
