FPGACoder/HandyControl/HandyControl_Shared/Themes/Styles/Base/GotoTopBaseStyle.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:hc="clr-namespace:HandyControl.Controls">

    <Style x:Key="GotoTopBaseStyle" BasedOn="{StaticResource ButtonBaseStyle}" TargetType="hc:GotoTop">
        <Setter Property="Width" Value="50"/>
        <Setter Property="Height" Value="50"/>
        <Setter Property="hc:BorderElement.CornerRadius" Value="25"/>
        <Setter Property="hc:IconElement.Geometry" Value="{StaticResource UpGeometry}"/>
        <Setter Property="Foreground" Value="{DynamicResource PrimaryTextBrush}"/>
        <Setter Property="Padding" Value="16"/>
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="FocusVisualStyle">
            <Setter.Value>
                <Style>
                    <Setter Property="Control.Template">
                        <Setter.Value>
                            <ControlTemplate>
                                <Rectangle Style="{StaticResource RectangleFocusVisualCircular}"/>
                            </ControlTemplate>
                        </Setter.Value>
                    </Setter>
                </Style>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="True">
                <Setter Property="Background" Value="{DynamicResource SecondaryRegionBrush}"/>
            </Trigger>
            <Trigger Property="IsPressed" Value="True">
                <Setter Property="Background" Value="{DynamicResource BorderBrush}"/>
            </Trigger>
        </Style.Triggers>
    </Style>

</ResourceDictionary>