ShadowFox/userChrome-files/windows_fixes/library.css

@-moz-document url(chrome://browser/content/places/places.xul),
url(chrome://browser/content/places/bookmarkProperties.xul) {
  #metaTagsCaption,
  #security-identity,
  #security-identity-groupbox,
  #security-privacy,
  #security-privacy-groupbox,
  #security-technical,
  #security-technical-groupbox {
    -moz-appearance: none!important;
    background-color: var(--in-content-page-background)!important;
    border: none!important;
    color: var(--in-content-selected-text)!important
  }
  #security-identity-groupbox,
  #security-privacy-groupbox,
  #security-technical-groupbox {
    -moz-appearance: none!important;
    background-color: var(--in-content-category-header-background)!important
  }
}