.header-primary .logo-oxu:after {
    content: "";
    position: absolute;
    width: 32px;
    height: 32px;
    display: inline-block;
    background-image: url(https://cdn.oxu.az/xb64.png);
    background-size: contain;
    right: -40px;
    top: -5px;
}

/*
.header-primary .logo-oxu:before {
    content: "";
    position: absolute;
    width: 32px;
    height: 32px;
    display: inline-block;
    background-image: url(https://cdn.oxu.az/20_jan.png);
    background-size: contain;
    left: -6px;
    top: -5px;
}
*/