facetwp hide top level hierarchical checkboxes

/** hides top level checkbox icon
 ** widens click area for +/- so that it triggers expand/collapse instead of selecition
 **/

.facetwp-type-checkboxes > .facetwp-checkbox {
    position: relative;
    background-image: none;
    padding-left: 0;
}
.facetwp-type-checkboxes > .facetwp-checkbox.checked {
    background-image: none;
}

.facetwp-type-checkboxes > .facetwp-checkbox .facetwp-expand {
    width: 100%;
    position: absolute;
    right: 0;
    display: block;
    top: 0;
    text-align: right;
}