Blending mode in pinned object or header

What I’m trying to do
Describe the goal or outcome you’re hoping for

HiI have three words that function like a header menu and use blend mode: exclude so they invert against the background.

The problem is: when I use “pin to page”, the blend mode stops working.

Does anyone know how to keep the blend mode “exclude” working when the element is pinned to the page or in the header?

I do not know how to code but i can try if it is not so complex I need these links to be in all pages pinned at the top and in exclude blend mode.

I reply myself! please bare in mind I do not how to code.. I am a graphic designer, so I just did it with many trials with chat gpt / and it worked creating a case for the words I wanted to stay pinned (fixed actually) and in exclude blending mode. So if it helps someone great!

the object, in this case a word (that links to another pages) DOES NOT have to be in the heather.