config/initializers/sanitizer.rb

@@ -1,2 +1,2 @@

                 ActionView::Base.sanitized_allowed_tags += Set.new(%w(style table thead tbody tr th td))
              

                -ActionView::Base.sanitized_allowed_attributes += Set.new(%w(border cellspacing cellpadding valign))
              

                +ActionView::Base.sanitized_allowed_attributes += Set.new(%w(border cellspacing cellpadding valign style))