The #titlebar element is a div, so this element is `display:block` by default. This redefines it to be `display:none`, then overrides it back to `display:block` in the body.in-browser case.

There should instead be a set of mutually exclusive classes such as "in-browser" and (something like) "in-cef" which get applied to the body tag (in brackets.js). I think this sets a better precedent if anyone wants to handle some other case in the future.

Then, this rule would change from:

```
    // Visible only in-browser
    display: none;
    body.in-browser & {
        display: block;
    }
```

to simply:

```
    // Not visible in CEF
    body.in-cef & {
        display: none;
    }
```