required arg

Author: mgwalker

_includes/components/banner.html

@@ -19,7 +19,7 @@
       <script type="text/javascript">
         // Hide the gov banner immediately rather than waiting for external JS
         // sources to load and execute.
-        document.getElementById("gov-banner").setAttribute("hidden");
+        document.getElementById("gov-banner").setAttribute("hidden", "");
       </script>
       <div class="grid-row grid-gap-lg">
         <div class="usa-banner__guidance tablet:grid-col-6">