OnlineMonitorSystem/HandyControl/HandyControl_Shared/Themes/Styles/FlowDocument.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">

    <Style BasedOn="{StaticResource FlowDocumentScrollViewerBaseStyle}" TargetType="FlowDocumentScrollViewer"/>

    <Style BasedOn="{StaticResource FlowDocumentPageViewerBaseStyle}" TargetType="FlowDocumentPageViewer"/>

    <Style BasedOn="{StaticResource FlowDocumentReaderBaseStyle}" TargetType="FlowDocumentReader"/>
    
</ResourceDictionary>