Bug 1022880 - [Camera] Add focus state color to the continuous auto focu...

...s ring
Remove `transform-origin`. Then take the following lines from `.focus` and *remove* them and insert them here instead:

```
  position: absolute; /* Only keep this one line in the .focus class above, remove the rest */
  width: 10rem;
  height: 10rem;
  font-size: 10rem;
  margin-top: -5rem;
  margin-left: -5rem;
```