How can I remove the black color from below

[spacesdima123456]

How can I remove the black color from the bottom? The BorderColor property changes color.
If the BorderColor property is set to Transparent, then everything is ok, but then the head border disappears.

[symbiogenesis]

You can try using the current main branch as it has the sensible-layout branch merged now, as of PR #121

[symbiogenesis]

Until the next version is released, you could clone the main branch and reference it as a project reference instead of a package reference.