Source: dist/css/virtual_boot.css, line 8472
Example
<aside class="flex flex_none flex_column gap-y_3 m-x_auto:md max-w_30:md p-b_4 p-b_4:md w_100">
<nav aria-label="session actions" class="flex flex_none flex_row gap-x_2 gap-y_3 justify_between">
<a href="#" aria-label="mark as favorite" class="btn btn-secondary flex_none a:bg_alert-n2 h:bg_alert-n4 flex_none grid items_center text_center [active]" ><i class="fas fa-heart"></i></a> <a href="#" aria-label="download calendar reminder" class="btn btn-secondary flex_none a:bg_alert-n2"><i class="fas fa-calendar"></i></a>
<a href="#" aria-label="navigate to" class="btn btn-primary flex_auto">Watch</a>
</nav>
<div class="cursor_not-allowed" onclick="alert('This attachment is not available to be downloaded at this time. You can download the attachment when it is available at Saturday, Nov. 20, 2021@ 11:15 a.m. – 11:45 p.m')">
<span aria-label="download attachments locked" class="br_radius btn btn-outline-secondary btn-sm flex_auto font-size_down-1 w_100 disabled" ><i class="far fa-lock"></i> Attachments</span>
</div></aside>