Hello, @Rikinte,
Your issue is resolved now kindly check back to your site after clearing the browser cache.
I created a new header for the blog page only check the image: https://postimg.cc/G9MH1nWj and then I set the header to overlap & transparent check the image: https://postimg.cc/qttG2G2P by doing this your issue is resolved.
Regards 8Themes Team.