diff --git a/www/conservancy/static/css/conservancy.css b/www/conservancy/static/css/conservancy.css
index bcca7a557368aa14232c18444b9df531c5c547dd..f15ef6d1942e5755bd12d4e0b908c56dd04ae538 100644
--- a/www/conservancy/static/css/conservancy.css
+++ b/www/conservancy/static/css/conservancy.css
@@ -151,6 +151,12 @@ text-decoration: none; color: #557733;
   }
 }
 
+@media screen and (max-width: 52em) { 
+  #sidebar { 
+      display: none; 
+  } 
+} 
+
 p.footnote {
     font-size: 85%;
 }