.navbar-style-one {
height: 100%;
margin-top: 0;
top: 0;
}
.navbar-style-one #site-navigation,
.navbar-style-one .dropdown-menu,
.navbar-style-one .dropdown-menu > li,
.navbar-style-one .dropdown-menu > li.menu-item > a {
height: 100%;
}
.navbar-style-one .dropdown-menu > li {
display: table;
}
.navbar-style-one .dropdown-menu > li.menu-item > a {
display: table-cell;
vertical-align: middle;
}
Snippets: Full-Height Header One Menu
All CSS snippets should be added via a child theme's style.css file or using the built-in Custom CSS panel.