a.linkedin {
    background: url(/images/icon-linkedin.svg);
    background-size: 24px 24px;
    background-position: center center;
    background-repeat: no-repeat;
}

a.facebook {
    background: url(/images/icon-facebook.svg);
    background-size: 24px 24px;
    background-position: center center;
    background-repeat: no-repeat;
}

a.google-plus {
    background: url(/images/icon-google-plus.svg);
    background-size: 30px 30px;
    background-position: center center;
    background-repeat: no-repeat;
}

a.twitter {
    background: url(/images/icon-twitter.svg);
    background-size: 24px 24px;
    background-position: center center;
    background-repeat: no-repeat;
}