Reply To: hover color behind header widget navigation

Here’s the code for the nav I’m talking about. I added a background color for the hover, but seems like what I’d need to do set a height so it fills up the entire header, vertically. Which would be 108px…but I’ve tried various things (i.e. background-height) with no luck. Any ideas?:

/* Site Header Navigation
——————————————— */

.site-header .genesis-nav-menu a {
color: #990000;
}

.site-header .genesis-nav-menu .current-menu-item > a {
color: #990000;
}
.site-header .genesis-nav-menu a:hover {
color: #ccc;
background: #990000;
}

.site-header .genesis-nav-menu .sub-menu .current-menu-item > a {
color: #ccc;
}