MaterialDesignTheme.TextBlock.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Hyperlink.xaml" />
    </ResourceDictionary.MergedDictionaries>

    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignTextBlock">
        <Setter Property="Padding" Value="0,4" />
        <Setter Property="FontSize" Value="13" />
        <Setter Property="FontWeight" Value="Regular" />
    </Style>

    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignCaptionTextBlock"
           BasedOn="{StaticResource MaterialDesignTextBlock}">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignCaptionHyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="12" />
        <Setter Property="FontWeight" Value="Regular" />
    </Style>
    
    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignBody1TextBlock"
           BasedOn="{StaticResource MaterialDesignTextBlock}">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignBody1Hyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="16" />
        <Setter Property="FontWeight" Value="Regular" />
    </Style>

    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignBody2TextBlock">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignBody2Hyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="14" />
        <Setter Property="FontWeight" Value="Regular" />
    </Style>

    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignOverlineTextBlock">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignOverlineHyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="10" />
        <Setter Property="FontWeight" Value="Regular" />
    </Style>
    
    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignSubtitle1TextBlock">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignSubtitle1Hyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="16" />
        <Setter Property="FontWeight" Value="Regular" />
    </Style>
    
    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignSubtitle2TextBlock">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignSubtitle2Hyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="14" />
        <Setter Property="FontWeight" Value="Medium" />
    </Style>
    
    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignHeadline6TextBlock">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignHeadline6Hyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="20" />
        <Setter Property="FontWeight" Value="Medium" />
    </Style>
    
    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignHeadline5TextBlock">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignHeadline5Hyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="24" />
        <Setter Property="FontWeight" Value="Regular" />
    </Style>
    
    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignHeadline4TextBlock">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignHeadline4Hyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="34" />
        <Setter Property="FontWeight" Value="Regular" />
    </Style>
    
    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignHeadline3TextBlock">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignHeadline3Hyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="48" />
        <Setter Property="FontWeight" Value="Regular" />
    </Style>
    
    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignHeadline2TextBlock">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignHeadline2Hyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="60" />
        <Setter Property="FontWeight" Value="Light" />
    </Style>
    
    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignHeadline1TextBlock">
        <Style.Resources>
            <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignHeadline1Hyperlink}" />
        </Style.Resources>
        <Setter Property="FontSize" Value="96" />
        <Setter Property="FontWeight" Value="Light" />
    </Style>
    
    <Style TargetType="{x:Type TextBlock}" x:Key="MaterialDesignButtonTextBlock">
        <Setter Property="FontSize" Value="14" />
        <Setter Property="FontWeight" Value="Medium" />
    </Style>

</ResourceDictionary>