Scroll Locked/Independent Component

Our client has a requirement for notification and validation messaging that appears in the same position on the window regardless of scroll position.

Is there a way to implement a component (possibly a header/footer) that appears independently of the page scroll state?

I.e If I have an interface that is 2 screen heights in length, I will see the component in the same position regardless of if I am at the top of the interface or the bottom of the interface

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