Source: dist/css/library_boot.css, line 6164
9.3.1.3 Tab: Disabled
Description: Disabled decorations is a swap of many of the decoration classes with the removal of the hover and active classes.
Example
Default styling
<li class="br-t_3 br_white-0 br_solid:md m-l_1 nav-item">
<a class="br-b_3 br_solid:md br_white-0 c_black-4 opacity-5 bg_black-1 disabled h:underline-none m-y_n2:md nav-link p-x_3 p-x_4" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>