Fixes #12753 (#13161)
Fixes #12753 (#13161)

* * Adding break line for the newletter-error div element after the error message.

* Fixing #12753
* Reverting the changes in html
* Adding 'width:100%;' to the #newsletter_error css

bqbn/addons-server,mozilla/olympia,wagnerand/addons-server,wagnerand/addons-server,mozilla/addons-server,eviljeff/olympia,mozilla/olympia,diox/olympia,eviljeff/olympia,wagnerand/addons-server,mozilla/addons-server,mozilla/addons-server,bqbn/addons-server,mozilla/addons-server,diox/olympia,diox/olympia,wagnerand/addons-server,diox/olympia,mozilla/olympia,mozilla/olympia,bqbn/addons-server,bqbn/addons-server,eviljeff/olympia,eviljeff/olympia