<ResourceDictionary xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <FontWeight x:Key="ExpanderHeaderFontWeight">600</FontWeight>
    <x:Double x:Key="ExpanderIconSize">8</x:Double>

    <CornerRadius x:Key="ExpanderHeaderCornerRadius">3</CornerRadius>
    <Thickness x:Key="ExpanderHeaderMargin">8 4</Thickness>
    <Thickness x:Key="ExpanderHeaderPadding">8</Thickness>
    <Thickness x:Key="ExpanderEndIconMargin">0 0 8 0</Thickness>
    <Thickness x:Key="ExpanderContentMargin">16 4 16 8</Thickness>
    <Thickness x:Key="ExpanderFrontIconMargin">8 0 0 0</Thickness>
    <Thickness x:Key="ExpanderDownContentBorderThickness">0 0 0 1</Thickness>
    <Thickness x:Key="ExpanderUpContentBorderThickness">0 1 0 0</Thickness>
    <Thickness x:Key="ExpanderLeftContentBorderThickness">1 0 0 0</Thickness>
    <Thickness x:Key="ExpanderRightContentBorderThickness">0 0 1 0</Thickness>
</ResourceDictionary>