.visually-hidden{
  position:absolute;

  width:1px;
  height:1px;

  padding:0;
  margin:-1px;

  overflow:hidden;

  clip:rect(0,0,0,0);
  white-space:nowrap;

  border:0;
}

body.modal-open{
  overflow:hidden;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  white-space: nowrap;
  border: 0;
  clip: rect(0, 0, 0, 0);
}