Multi-Level Push Menu Header Fixed Position after clicking on any space place over the page

[omerkaracaa]

I want to make "Multi-Level Push Menu" section's position fixed so i mean header section.I can make header position fixed.It is ok but the problem is that my fixed header position is being deactivated when i scroll down my page after clicking any space place on overlay layout to close sidebar menu.I tried to use jquery to fix the problem,to make header section fixed after clicking any place on overlay to return the page but it did not work.?