menu in navbar

Remove this CSS:
https://generatepress.com/forums/topic/menu-in-navbar/#post-909913

Then replace:

.custom-search {
    float: left;
    padding: 11px;
    width: 170px;
    position: absolute;
}

With

.custom-search {
    padding: 11px;
    width: 170px;
    position: absolute;
    left: 0;
}

perfect, Thank you very much leo

No problem :)