Sticky header not working in Edge (but working in Chrome

Hi.
I am currently using one of the general themes
https://www.balbooa.com/showcase-template/gridbox-themes/onefold/home (onefold)

However, this site topic normally uses sticky header, and currently in my website (and in the showcase) the sticky header only shows up in Chrome and not in Edge (microsoft edge). i have not tested this on other browsers.

my website is www.hamrodev.com

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