tweaking pullquote styles

Before
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![image](https://cloud.githubusercontent.com/assets/960919/4089662/675ad29a-2f70-11e4-8e41-d98b008cba04.png)

After
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![image](https://cloud.githubusercontent.com/assets/960919/4089656/551d882a-2f70-11e4-8ad8-c3f8085ecf82.png)