Where to find this hover color?

Question

css

here is the site link: sciencejobs.ru
in the Header in the MainNav block I can’t find out where to change the color when hovering over the button with the mouse.
Subject, how to change the appearing color to something else?
The template is paid, Jobroller
Thank you

Answer 1

#mainNav li a:hover, #mainNav li a:focus {
background: #2c4975;
}
Line 254
sciencejobs.ru/wp-content/themes/jobroller/styles/...