Set HorizontalAnchor, VerticalAnchor, Background for Figure
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="" Height="300" Width="300"> <Grid> <FlowDocumentReader> <FlowDocument> <Paragraph> <Figure HorizontalAnchor="PageCenter" VerticalAnchor="PageCenter" Background="WhiteSmoke"> <Paragraph>This is a simple paragraph inside a Figure. This is a simple paragraph inside a Figure. This is a simple paragraph inside a Figure. This is a simple paragraph inside a Figure. This is a simple paragraph inside a Figure. </Paragraph> </Figure> </Paragraph> </FlowDocument> </FlowDocumentReader> </Grid> </Window>