Navbar selected ( highlighted ) page tile background color change?

here you can see my navbar in the site i just need a small help i did try every setting in hestia but no luck

change that white selected tile in the navbar help in hestia theme in wordpress?

i just want that white background behind the selected page text in the navbar menu to be gone or at least be able to change its color or make it transparent

The page I need help with: [log in to see the link]