.icon {
    display: inline-block;
    text-align: left;
    text-indent: -9999px;
    vertical-align: text-bottom;
    background-repeat: no-repeat;
}
.site-footer .icon {
    background-image: url(../images/contact_icon.png);
    width: 30px;
    height: 30px;
    vertical-align: middle;
    margin: -3px 0 0;
}
.site-footer .icon.phone {
    background-position: 0 0;
}
.site-footer .icon.mail {
    background-position: 0 -30px;
}
.site-footer .icon.fax {
    background-position: 0 -60px;
}