REMOVE gray layer thet is on the top of the header image on the homepage

Please can anyone help me with Shapely theme on Colorlib?
I want to remove the gray layer that is on top of the header image on the homepage as well as on top of other pages.
My page is www.icelandic-products.info
Any help would certainly be appreciated.
Thank you a lot !!

I have found the problem … I uninstal and delete fancybox plugin and it worked.

I will close this case now, Feel free to contact us again if you have other questions