facetwp font awesome for checkboxes

/** solid boxes https://d.pr/i/qxfuJx - example uses Font Awesome WordPress plugin https://wordpress.org/plugins/font-awesome/ **/

.facetwp-type-checkboxes .facetwp-checkbox {
    background: none;
    padding-left: 0;
}

.facetwp-checkbox.checked {
    background: none;
}

.facetwp-type-checkboxes .facetwp-checkbox::before {
    display: inline-block;
    width: 20px;
    height: 25px;
    content: "f0c8";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;

}

.facetwp-type-checkboxes .facetwp-checkbox.checked::before {
    content: "f14a";
}