facetwp css classes

facet.css

/**
 ** facet classes
 **/

.facetwp-facet {
  /* class of div that wraps each facet type */
}
.facetwp-facet-FACET-NAME {
  /* class for a facet where facet name is FACET-NAME, applied to same div as .facetwp-facet */
}
.facetwp-type-dropdown {
  /* class of drop down facets, applied to same div as .facetwp-facet */
}
.facetwp-type-radio {
  /* class of radio facets, applied to same div as .facetwp-facet */
}
  
.facetwp-type-color {
  /* class of color facets, applied to same div as .facetwp-facet */
}

/** classes used in multiple types of facets **/

.facetwp-counter {
  /* class for number counts of each option, used in dropdown, radio  */
}

/** classes used in checkboxes
 ** also see .facetwp-counter above
 **/
.facetwp-checkbox.checked {
 /* checked class is applied to selected checkboxes */ 
}
.facetwp-expand {
  /* classes for expand link of parents that have sub-selections in heirarchical facets */
}
.facetwp-depth {
  /* div class that wraps sub-selection checkboxes in heirarchical facets */
}
.facetwp-depth.visible {
  /* visible class is applied to  .facetwp-depth when expanded to show */
}

/**
 ** radio facet classes
 **/
.facetwp-radio {
  /* class applied to div for an individual radio option, this is a div not a <input type="radio"> */
}
.facetwp-radio.checked {
  /* checked class is applied to the selected radio */
}

Not critical, but you are missing the closing */ on line 41.