minor css updates


![hide](https://f.cloud.github.com/assets/4712046/2243538/384299d6-9d2e-11e3-96fc-4d33b2498523.png)


![corner labels](https://f.cloud.github.com/assets/4712046/2238385/659b2b80-9beb-11e3-9800-8b0a69192fed.png)