Possibly an old CSS leftover.

Possibly an old CSS leftover, [its](https://github.com/Semantic-Org/Semantic-UI/blob/fea6b4d4bfef05e9918d41946dd17c807bfeaade/server/files/stylesheets/semantic.css#L1327) already replaced [by](https://github.com/Semantic-Org/Semantic-UI/blob/fea6b4d4bfef05e9918d41946dd17c807bfeaade/server/files/stylesheets/semantic.css#L1313):

```CSS
#example .attached.launch.button {
    display: none;
}
```