App.xaml

<Application x:Class="Auction.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:Auction"
             StartupUri="LoginScreen.xaml">
    <Application.Resources>
        
        <Style x:Key="BorderedItem" TargetType="ListViewItem">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="ListViewItem">
                        <Border Name="Border" BorderBrush="Transparent" BorderThickness="2">
                            <ContentPresenter />
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Application.Resources>
    
</Application>