PowerToys/src/settings-ui/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="SemiBold" />
        <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="0,34,0,4" />
        <Setter Property="FontWeight" Value="SemiBold"/>
        <Setter Property="AutomationProperties.HeadingLevel" Value="Level2" />
    </Style>

    <Style x:Key="SettingsGroupTitleStyleAsHeader" TargetType="TextBlock" BasedOn="{StaticResource SettingsGroupTitleStyle}">
        <Setter Property="Margin" Value="0,0,0,4" />
    </Style>

    <Style x:Key="OobeSubtitleStyle" TargetType="TextBlock">
        <Setter Property="FontWeight" Value="SemiBold"/>
        <Setter Property="FontSize" Value="16" />
        <Setter Property="Margin" Value="0,16,0,0" />
    </Style>

    <Style x:Key="SemiBoldBody" TargetType="TextBlock">
        <Setter Property="FontWeight" Value="SemiBold"/>
    </Style>
</ResourceDictionary>