Adds generic wrapper class for doing responsive images via explicit `padding-bottom`
Adds generic wrapper class for doing responsive images via explicit `padding-bottom`

artsy/force,kanaabe/force,eessex/force,kanaabe/force,yuki24/force,oxaudo/force,joeyAghion/force,damassi/force,eessex/force,damassi/force,xtina-starr/force,erikdstock/force,mzikherman/force,TribeMedia/force-public,cavvia/force-1,xtina-starr/force,dblock/force,izakp/force,damassi/force,kanaabe/force,anandaroop/force,artsy/force,TribeMedia/force-public,eessex/force,cavvia/force-1,anandaroop/force,joeyAghion/force,kanaabe/force,oxaudo/force,mzikherman/force,joeyAghion/force,yuki24/force,oxaudo/force,izakp/force,erikdstock/force,kanaabe/force,xtina-starr/force,izakp/force,eessex/force,artsy/force,xtina-starr/force,erikdstock/force,damassi/force,mzikherman/force,artsy/force-public,yuki24/force,cavvia/force-1,oxaudo/force,erikdstock/force,anandaroop/force,dblock/force,artsy/force,mzikherman/force,anandaroop/force,yuki24/force,artsy/force-public,izakp/force,cavvia/force-1,dblock/force,joeyAghion/force