#wpadminbar #wp-admin-bar-opreset>.ab-item:before {
    content: "\2A00";
    content: "\2A00" / '';
    top: 0px;
}

#wpadminbar #wp-admin-bar-reset_nginx_cache>.ab-item:before {
    content: "\2115";
    content: "\2115" / '';
    top: 0px;
}