/* Minimal helpers normally supplied by Backdrop's system CSS, which anonymous
   visitors don't get (the D6 theme never loaded Drupal's stylesheets). */
.element-invisible {
  position: absolute !important;
  clip: rect(1px, 1px, 1px, 1px);
  overflow: hidden;
  height: 1px;
}
.element-hidden {
  display: none;
}