<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <Style x:Key="ButtonMainMenu" BasedOn="{StaticResource {x:Type Button}}" TargetType="Button">
        <Setter Property="Margin" Value="0,5,0,5" />
        <Setter Property="HorizontalAlignment" Value="Stretch" />
        <Setter Property="HorizontalContentAlignment" Value="Right" />
    </Style>
</ResourceDictionary>