kmpdfkit_demo/Demo/Examples/Compdfkit.Controls/Asset/Styles/RoundCornerTextBoxStyle.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Style TargetType="TextBox" x:Key="RoundCornerTextBox">
        <Setter Property="Height" Value="36"/>
        <Setter Property="FontSize" Value="14"/>
        <Setter Property="Padding" Value="10,0,15,0"/>
        <Setter Property="Background" Value="Transparent"></Setter>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="TextBox">
                    <Border x:Name="Border" BorderBrush="{TemplateBinding BorderBrush}" 
                                    BorderThickness="{TemplateBinding BorderThickness}" 
                                    Background="{TemplateBinding Background}" 
                                    SnapsToDevicePixels="True"
                                    CornerRadius="3">
                        <ScrollViewer x:Name="PART_ContentHost" Focusable="false"
                                                  HorizontalScrollBarVisibility="Hidden" 
                                                  VerticalScrollBarVisibility="Hidden"
                                                  VerticalAlignment="Center" MinHeight="20"/>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Opacity" TargetName="Border" Value="0.56"/>
                        </Trigger>
                        <Trigger Property="IsMouseOver" Value="true">
                            <Setter Property="BorderBrush" TargetName="Border" Value="#FF7EB4EA"/>
                        </Trigger>
                        <Trigger Property="IsKeyboardFocused" Value="true">
                            <Setter Property="BorderBrush" TargetName="Border" Value="#FF569DE5"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style TargetType="TextBox" x:Key="AccountTextBoxStyle" BasedOn="{StaticResource RoundCornerTextBox}"></Style>
    
    <Style TargetType="TextBox" x:Key="PasswordTextBoxStyle" BasedOn="{StaticResource RoundCornerTextBox}">
        <Setter Property="Padding" Value="15,0,30,0"/>
    </Style>
</ResourceDictionary>