Expose headerHeight prop on article
Expose headerHeight prop on article

craigspaeth/reaction,artsy/reaction,xtina-starr/reaction,craigspaeth/reaction,xtina-starr/reaction,artsy/reaction-force,artsy/reaction,artsy/reaction-force,craigspaeth/reaction,xtina-starr/reaction,xtina-starr/reaction,artsy/reaction