Mobile first thumbnail and fix widget support responsive

1: Mobile first thumbnail
![screen shot 2557-12-08 at 11 04 32 pm](https://cloud.githubusercontent.com/assets/1642499/5342208/c20967ca-7f2e-11e4-8c85-4ea427463c6a.png)

2: fix widget support responsive
![screen shot 2557-12-08 at 11 04 49 pm](https://cloud.githubusercontent.com/assets/1642499/5342211/c8168b3e-7f2e-11e4-8ff0-d58ece0a80b9.png)