.site_header_sticky {
    position: sticky;
    top: 0;
    z-index: 1001;
    background-color: white;
}

.site_header_bottom_shadow {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}
.site_header_bottom_shadow.mobile {
    box-shadow: none;
}