PowerToys/src/core/Microsoft.PowerToys.Settings.UI/Styles/TextBlock.xaml

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

    <!--Common texts-->
    <Style x:Key="PageTitleStyle" TargetType="TextBlock">
        <Setter Property="VerticalAlignment" Value="Center" />
        <Setter Property="FontWeight" Value="SemiLight" />
        <Setter Property="FontSize" Value="{StaticResource LargeFontSize}" />
        <Setter Property="TextTrimming" Value="CharacterEllipsis" />
        <Setter Property="TextWrapping" Value="NoWrap" />
    </Style>

    <Style x:Key="BodyTextStyle" TargetType="TextBlock">
        <Setter Property="FontWeight" Value="Normal" />
        <Setter Property="FontSize" Value="{StaticResource MediumFontSize}" />
        <Setter Property="TextTrimming" Value="CharacterEllipsis" />
        <Setter Property="TextWrapping" Value="Wrap" />
    </Style>


    <Style x:Key="SettingsGroupTitleStyle" TargetType="TextBlock" BasedOn="{StaticResource SubtitleTextBlockStyle}">
        <Setter Property="Margin" Value="0,34,0,8" />
    </Style>

</ResourceDictionary>