@maya - Very nice alternative - didn't think of it myself until your comment. Well done!

@msecret - If I'm thinking about this solution, combined with the utility suggestion from #1192 we would get something like:

@mixin aria-hidden() {
  &[aria-hidden=true] {
    display: none;
  }
}

To allow developers to @include within any class or element; thereby, allowing any element to opt-in to being toggled based on aria-hidden state based on CSS, yeah?

@joshbruce @msecret where else are we using "allowing any element to opt-in to being toggled based on aria-hidden state" on the site?

Will use #1192 instead of this.