Hello,
Please add this CSS to Theme Setting > Custom CSS
@media (max-width: 1440px) {
.main-header .main-nav, .main-header .woodmart-wishlist-info-widget, .main-header .wrapp-header>.woodmart-search-form, .sticky-header .main-nav, .sticky-header .woodmart-wishlist-info-widget, .sticky-header .wrapp-header>.woodmart-search-form {
display: none;
}
.wrapp-header .woodmart-header-links {
position: fixed;
top: -9999px;
z-index: 600;
}
.header-mobile-center .header-left-side, .header-mobile-center .left-side, .header-mobile-center .right-column {
-webkit-box-flex: 1;
-ms-flex: 1 0 0px;
flex: 1 0 0;
}
body .header-left-side {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
}
body .mobile-nav-icon:not(.whb-mobile-nav-icon) {
display: -webkit-inline-box;
display: -ms-inline-flexbox;
display: inline-flex;
}
}
Best Regards