diff --git a/docs/stylesheets/extra.css b/docs/stylesheets/extra.css
index 8285778..f13051f 100644
--- a/docs/stylesheets/extra.css
+++ b/docs/stylesheets/extra.css
@@ -22,3 +22,10 @@
 .md-sidebar {
     width: 8rem
 }
+
+@media screen and (max-width: 1219px) {
+    .md-sidebar--secondary {
+      display: none !important;
+    }
+  }
+