Visually hidden
Default
Title for screen readers
<h4 class="visually-hidden">Title for screen readers</h4>
<h4 class="visually-hidden">Title for screen readers</h4>
Focusable
<a href="#main" class="visually-hidden-focusable">Skip to main content</a>
<a href="#main" class="visually-hidden-focusable">Skip to main content</a>