/*
* Hide only visually, but have it available for screen readers:
* http://snook.ca/archives/html_and_css/hiding-content-for-accessibility
*/

.visuallyhidden, %visuallyhidden {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;

  /*
  * Extends the .visuallyhidden class to allow the element
  * to be focusable when navigated to via the keyboard:
  * https://www.drupal.org/node/897638
  */
  &.focusable:focus, &.focusable:active {
    clip: auto;
    height: auto;
    margin: 0;
    overflow: visible;
    position: static;
    width: auto;
  }
}