Add missing aria attributes to main site navigation menu toggle

diff --git a/docs/_includes/nav-home.html b/docs/_includes/nav-home.html
index 5b7e9bf7b39e77b83ecfb7163e0890bb42375e51..edd3473bec3234c6780f6a419d6d02df29bc8f29 100644 (file)
--- a/docs/_includes/nav-home.html
+++ b/docs/_includes/nav-home.html
@@ -25,7 +25,7 @@
   {% endcomment %}
 
   <div class="clearfix">
-    <button class="navbar-toggler pull-xs-right hidden-sm-up" type="button" data-toggle="collapse" data-target="#bd-main-nav">
+    <button class="navbar-toggler pull-xs-right hidden-sm-up" type="button" data-toggle="collapse" data-target="#bd-main-nav" aria-controls="bd-main-nav" aria-expanded="false" aria-label="Toggle navigation">
       &#9776;
     </button>
     <a class="navbar-brand hidden-sm-up" href="{{ site.baseurl }}/">