Replace header w. a section ID on Blog

Hello Anyone, my website has two blogs. I created a new header using the section tool for the second blog (Runway) and would like for it to replace the header of the site only within that blog. The thinking behind this is so readers understand that this part of the website is a separate section of the site that has its own menu. (See Print Screen): The bottom header in the black  section[data-section-id="65f9e8eb04692b2b68540c75"] is what I created to replace on the sites regular header within blog /Runway. 

Any help is much appreciated! 

Please share your website URL so that we can check.

Hey @Sam0smith, thanks for the reply! My URL for the site is https://www.vainqueurmag.ca/, the url for the blog I created a seperate header for is https://www.vainqueurmag.ca/runway

Thank you @tuanphan! You're the greatest.