If you were to hide a link by setting display: none in the CSS then screen readers wouldn’t find it.
Instead, we position it absolutely, with clipping.
CSS
.offscreen
{
position: absolute;
clip: rect(1px 1px 1px 1px); /* for Internet Explorer */
clip: rect(1px, 1px, 1px, 1px);
padding: 0;
b...
