Hi there,
the App site header is setup like so:
1. Customizer > Layout > Header –> set Navigation as Header.
2. Add this CSS to create the layout logo / menu / menu-bar-items
/* Navigation padding */
.main-navigation .inside-navigation {
padding: 10px;
}
/* Center main nav */
@media (min-width: 1300px) {
.main-navigation .inside-navigation .main-nav {
position: absolute;
left: 50%;
transform: translateX(-50%);
}
}
3. Add the Buttons using a Block Element:
https://docs.generatepress.com/article/block-element-overview/
Select the Hook: menu_bar_items
to add the buttons in the correct position.