Reorder deprecated mixed order declarations in SCSS

Change-Id: Ibc2cd2574e55ab3cc42d1e59d5252b78a746e195
diff --git a/dev/scss/base/menu.scss b/dev/scss/base/menu.scss
index 4f76683..993b237 100644
--- a/dev/scss/base/menu.scss
+++ b/dev/scss/base/menu.scss
@@ -14,14 +14,15 @@
   text-indent: 0;
 
   opacity: 0;
-  &.visible {
-    opacity: 1;
-  }
 
   list-style: {
     type:     none;
     position: outside;
   }
+  
+  &.visible {
+    opacity: 1;
+  }
 
   &,
   > span.non-item:not(:empty) {