How to use html or content block (a countdown timer) for a featured image for a specific post

Question

I have the timer in a content block. Is there a way to add the content block as the featured image? Or just the html somehow? There is a thread on similiar situation in Aug answered by Nate Allen-not sure if helpful solution for me

This is the post (on the new url) where I want it to be the featured image. https://colorgallerybydesign.com/7-days-challenge-devoted-to-you

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Cynthia 2 months 0 Answers 15 views 0

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