.header-logo {
    background: url('images/logo.png') no-repeat left !important;
    background-size: 200px !important;
    height: 38px;
    width: 200px !important;
    filter: invert(100%);
}

.logo_login {
    max-width: 100%;
    max-height: 40px !important
}

.fa-shibboleth {
    width: 66px !important;
    height: 36px !important;
    background-size: 66px !important;
}