Скрытие банеров на мобилке

app/assets/styles/_base.scss

@@ -25,3 +25,9 @@ body {
     //     z-index: 100 !important;
     // }
 }
+
+@media screen and (max-width: 640px) {
+    .leftbar {
+        display: none;
+    }
+}

app/www/css/all.css

@@ -233,6 +233,10 @@ body {
   height: 100%;
   font-family: "opensans", Arial, "Helvetica CY", "Nimbus Sans L", sans-serif; }
 
+@media screen and (max-width: 640px) {
+  .leftbar {
+    display: none; } }
+
 .wrapper {
   width: 100%;
   max-width: 1220px;