Rejigging footer columns for responsive styling

app/views/shared/_footer.html.haml

@@ -1,6 +1,6 @@
 %footer
   .row.landing-page-row
-    .small-4.columns.text-left
+    .small-12.medium-4.columns.text-left
       %h4 Email us
       %p
         %a{href: "hello@openfoodnetwork.org".reverse, target: '_blank', mailto: true} 
@@ -17,7 +17,7 @@
         %a{title:'Join our group on LinkedIn', href: 'http://www.linkedin.com/groups/Open-Food-Foundation-4743336', target: '_blank'} 
           %i.fi-social-linkedin
           LinkedIn
-    .small-4.columns.text-left
+    .small-12.medium-4.columns.text-left
       %h4 Getting around
       %ul.ofn-list
         %li
@@ -28,7 +28,7 @@
           %a{href: ""} Producers
         %li
           %a{href: ""} Groups
-    .small-4.columns.text-left
+    .small-12.medium-4.columns.text-left
       %h4 About us
       %p OFN is a network of independent online food stores that connect farmers and food hubs with individuals and local businesses.  It gives farmers and food hubs an easier and fairer way to distribute their food. 
   .row.landing-page-row