7 Hide an element to all devices **except screen readers** with `.sr-only`. Combine `.sr-only` with `.sr-only-focusable` to show the element again when it's focused (e.g. by a keyboard-only user). Can also be used as mixins.
10 Necessary for following [accessibility best practices]({{ site.baseurl }}/getting-started/#accessibility).
14 <a class="sr-only sr-only-focusable" href="#content">Skip to main content</a>
21 @include sr-only-focusable;