Can I nest multiple Borders within each other?

Yes, you can nest multiple Borders by placing one <Border> element inside another. This allows you to create complex border designs.
XAML:

<Border x:Name="border1" Stroke="Black" Padding="0" WidthRequest="200" HeightRequest="100">
<Border x:Name="border2" Stroke="Red" WidthRequest="100" HeightRequest="50"/>
</Border>