Fixed css stylus source so they get compiled correctly.

Add newlines so the css properties are not takes as if they were selectors.

Without those linebreaks, the generated css file is invalid. Including `lungo.css` on a rails application and trying to compile it, fails due to malformed css. 

```
Invalid CSS after "...,video display:": expected pseudoclass or pseudoelement, was " inline-block *..."
  (in lungo.css)
```

Adding line breaks to separate selectors from their css properties on the stylus source has fixed this.