2.3.2 #Components.button.fakeDisabled Fake Disabled Buttons
Toggle example guides Toggle HTML markup
Buttons with the disabled styles but not really disabled. I know, you shouldn't use those unless you have a good reason for it.
Browser support: IE9+, Safari6+, Firefox30+, Chrome30+
Markup
<button class="sb-btn sb-btn--primary sb-btn--disabled">Button</button>
<button class="sb-btn sb-btn--secondary sb-btn--disabled">Button</button>
<button class="sb-btn sb-btn--subtle sb-btn--disabled">Button</button>
Source: components/_button.scss, line 30