visionmedia/nib — pull request #191 by lastw (2013-06-14 05:16:08+00:00)
Title: Positions single property support (like "relative: top -100px")

Inspected generated .css file and suprised of **((null))** property:
```css
.cards{position:relative;top:-100px;((null)):0;height:240px;}
```
I thought single parameters are supported. Fixed, updated tests.