diff --git a/styles/components/SubNav.module.scss b/styles/components/SubNav.module.scss
index fcad510eb..c637a69ac 100644
--- a/styles/components/SubNav.module.scss
+++ b/styles/components/SubNav.module.scss
@@ -18,6 +18,10 @@
         }
       }
     }
+    @media screen and (max-width: 400px) {
+      display: flex;
+      flex-direction: column;
+    }
   }
 
   a {