FISLib/FISSDK/FISSDKDemoV2/Resource/Style/TextBox.xaml

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

    <Style x:Key="DefaultTextBox" TargetType="{x:Type TextBox}">
        <Setter Property="FontSize" Value="{DynamicResource DefaultFontSize}" />
        <Setter Property="Foreground" Value="{DynamicResource FormControlBackground}" />
        <Setter Property="CaretBrush" Value="{DynamicResource FormControlBackground}" />
        <Setter Property="Background" Value="Transparent" />
        <Setter Property="BorderBrush" Value="{DynamicResource FormControlBackground}" />
        <Setter Property="BorderThickness" Value="0,0,0,1" />
        <Setter Property="Padding" Value="0,5,0,5" />
        <Setter Property="Height" Value="35" />
    </Style>
</ResourceDictionary>