.pkp_navigation_user_wrapper {
    position: relative;
}

.pkp_navigation_user_wrapper:before {
    content: "E-ISSN: XXXX-XXXX | P-ISSN: XXXX-XXXX";
    position: absolute;
    top: 5px;
    left: 20px;
    color: #ffffff;
    font-size: 13px;
    font-weight: bold;
}