Tweaks in image cards to be used in the flickr widget

![screen shot 2014-06-25 at 11 34 07](https://cloud.githubusercontent.com/assets/1152640/3383999/b7e7a25c-fc52-11e3-9a57-681c7d88fadd.png)

Have you checked this in IE8 (because of using `:not`)?

![1403692660](https://cloud.githubusercontent.com/assets/708296/3384139/cb631f6c-fc54-11e3-99d2-1b6c88032510.png)