hidden

style.css

/* from HTML5 Boilerplate http://html5boilerplate.com/ */

/* For image replacement */
.ir { display: block; text-indent: -999em; overflow: hidden; background-repeat: no-repeat; text-align: left; direction: ltr; }
.ir br { display: none; }

/* Hide for both screenreaders and browsers:
   css-discuss.incutio.com/wiki/Screenreader_Visibility */
.hidden { display: none; visibility: hidden; }

/* Hide only visually, but have it available for screenreaders: by Jon Neal.
  www.webaim.org/techniques/css/invisiblecontent/  &  j.mp/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: drupal.org/node/897638 */
.visuallyhidden.focusable:active, .visuallyhidden.focusable:focus { clip: auto; height: auto; margin: 0; overflow: visible; position: static; width: auto; }

/* Hide visually and from screenreaders, but maintain layout */
.invisible { visibility: hidden; }