Login ad (#2428)
Login ad (#2428)

* [add] login ad

* [add] login ad: width

* [fix] login ad: rspec

* [modify] login ad: add target='_blank' to link

ShinjiTanimoto/shirasagi,sunny4381/shirasagi,mizoki/shirasagi,mizoki/shirasagi,itowtips/shirasagi,itowtips/shirasagi,tany/ss,MasakiInaya/shirasagi,ShinjiTanimoto/shirasagi,sunny4381/shirasagi,tany/ss,tany/ss,ShinjiTanimoto/shirasagi,tany/ss,sunny4381/shirasagi,shirasagi/shirasagi,shirasagi/shirasagi,sunny4381/shirasagi,shirasagi/shirasagi,MasakiInaya/shirasagi,itowtips/shirasagi,mizoki/shirasagi,mizoki/shirasagi,shirasagi/shirasagi,MasakiInaya/shirasagi,ShinjiTanimoto/shirasagi,itowtips/shirasagi,MasakiInaya/shirasagi