I’m confused. Maybe there’s a misunderstanding here. Just in case: the `hidden` attribute is rendered by `display: none;` by default.

There’s no `.hidden` class in the shared directory, and here are only two `.hidden` classes in apps/settings/style:

```css
#icc .hidden {
  display: none;
}
```
```css
#feedback-email.hidden {
  display: none;
}
```
It’s doing the exact same thing as the `hidden` attribute, isn’t it? Worst case, if you have to specify additional rules you could also use a `#icc [hidden]` selector.