Having trouble getting my logo in the fullwidth submenu?

I saw this on a few other threads using this code.

#top .av-submenu-container {
background-image: url(https://kriesi.at/wp-content/themes/kriesi/images/logo.png);
background-repeat: no-repeat;
background-position: 0% 50%;
background-size: contain;
}

But it did not work for me. I am going to attach log in info in the private area for some help.

Thanks