Fixed margins on home page

app/assets/stylesheets/_application.scss

@@ -916,6 +916,7 @@ ul.warnings li,
 
 	article {
 		padding: rems(2.5) 0;
+		margin: 0 1em;
 
 		&.supplementary {
 			margin: rems(1) 7.5%;

app/views/application/home.html.haml

@@ -1,8 +1,9 @@
 - this_is_the_front_page
 - if @conference
 	= render 'conferences/header'
+	%article
 		= row do
-		= columns(tag: :article) do
+			= columns(medium: 10, push: {medium: 1}) do
 				%h2=_!@conference.title
 				= @conference.info.html_safe
 				- if @conference.workshops