.fa-orcid {
    background-image: url(../img/orcid-logo.png);
    background-repeat: no-repeat !important;
    background-position: 50% center;
    background-size: 70%;
}

.fa-spid {
    background-image: url(../img/spid-logo.png);
    background-repeat: no-repeat !important;
    background-position: 50% center;
    background-size: 70%;
}

.fa-cie {
    background-image: url(../img/CIE-logo.png);
    background-repeat: no-repeat !important;
    background-position: 50% center;
    background-size: 70%;
}

.fa-eidas {
    background-image: url(../img/eidas-logo.png);
    background-repeat: no-repeat !important;
    background-position: 50% center;
    background-size: 70%;
}