Blog author padding close #516

## blog author

### PC

![1ace830dfc55d5c7e4005c7a435afb7e](https://cloud.githubusercontent.com/assets/1044064/4993921/fb7ec010-69f6-11e4-901e-cb0391f6ab1e.png)

### SP

![7b5d600e831d82e523c1633d02473657](https://cloud.githubusercontent.com/assets/1044064/4993931/0e957e3c-69f7-11e4-8ee1-445dbc0d71d5.png)


## ソーシャルボタン

### PC

![9ffc22ff545716f66b9196f6be8fadd0](https://cloud.githubusercontent.com/assets/1044064/4993939/260d22fe-69f7-11e4-80e1-114323197d1d.png)

### SP

![426a8965dc6725115db7b846bdc25ced](https://cloud.githubusercontent.com/assets/1044064/4993941/30bbfe32-69f7-11e4-9fc5-c76f7758b5c5.png)