/*
**   the following class will not be visible on the screen
**   but the screen readers will be able to read them
*/

.visuallyhidden {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
}
.visuallyhidden.focusable:active,
.visuallyhidden.focusable:focus {
  clip: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  position: static;
}
.invisible-screenreader-only {
    top: 0;
    left: -2px;
    width: 1px;
    height: 1px;
    position: absolute;
    overflow: hidden;
}