.icon {
    display:inline-block;
    width:1em;
    height:1em;
    vertical-align:-0.12em;
    background-color: currentColor;

    -webkit-mask-repeat:no-repeat;
    -webkit-mask-position:center;
    -webkit-mask-size:contain;

    mask-repeat:no-repeat;
    mask-position:center;
    mask-size:contain;
}

.fa-phone {
    -webkit-mask-image:url("/static/icons/fa-phone.svg");
    mask-image:url("/static/icons/fa-phone.svg");
}