fix(style): Ensure the content box-shadow is not visibile in the firstrun flow. (#5614), r=@vbudhram
fix(style): Ensure the content box-shadow is not visibile in the firstrun flow. (#5614), r=@vbudhram


shane-tomlinson/fxa-content-server,mozilla/fxa-content-server,mozilla/fxa-content-server,shane-tomlinson/fxa-content-server,mozilla/fxa-content-server,shane-tomlinson/fxa-content-server