Fixes responsiviness for secondary menu.

src/admin/components/primary-menu.vue

@@ -123,6 +123,7 @@ export default {
             }
         }
 
+                background-color: $primary-darker;
         &.is-compressed {
             max-width: 42px;
 
@@ -163,7 +164,10 @@ export default {
                     }
                 }
             }
-
+            .separator {
+                width: 2px;
+                height: auto;
+            }
             a{ padding: 1em 0.8em !important;}
             .menu-text {
                 display: none !important;

src/admin/components/secondary-menu.vue

@@ -105,6 +105,8 @@ export default {
             width: 100% !important;
             max-width: 100% !important;
             a{ padding: 1em 0.8em !important; }
+            .menu-header { display: none;
+            }
             .menu-text {
                 display: none !important;
             }