PDFOffice_Windows_exe/PDF Office/Styles/TextBoxStyle.xaml

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

    <Style x:Key="PagesView_txtContext" TargetType="{x:Type TextBlock}">
        <Setter Property="FontFamily" Value="Segoe UI" />
        <Setter Property="FontSize" Value="12" />
    </Style>
    <Style x:Key="ViewMode_txtContext" TargetType="{x:Type TextBlock}">
        <Setter Property="FontFamily" Value="Segoe UI" />
        <Setter Property="FontSize" Value="11" />
    </Style>
    <Style x:Key="PagesView_titleContext" TargetType="{x:Type TextBlock}">
        <Setter Property="FontFamily" Value=" Segoe UI Semibold" />
        <Setter Property="FontWeight" Value="SemiBold" />
        <Setter Property="FontSize" Value="14" />
    </Style>
</ResourceDictionary>