.facetwp-checkbox {
    border: 1px solid var(--light-gray, #eee);
    background: var(--light-gray, #eee) !important;
    color: var(--black, #000);
    display: inline-block;
    margin-right: 10px;
    padding: 5px 10px !important;
}

.facetwp-checkbox.checked {
    background-image: unset !important;
    background: var(--medium-gray, #d6d6d6) !important;
}

.facetwp-checkbox.checked:before {
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    content: "\f00d";
    margin-right: 5px;
}