#wrapper:not(body.isApp #wrapper) {
    position: relative;
}

.announcement-bar-section:not(body.isApp .announcement-bar-section){
    position: sticky !important; 
    top: 0;
    left: 0;
    z-index: 999;
}

.header-section:not(body.isApp .header-section) {
    @media (width <= 768px) {
        top: 60px;
    }
    @media (width > 768px) {
        top: 45px;
    }
}