fix alert closing

[deploy site]

Author: titusfortner

website_and_docs/layouts/partials/alerts.html

@@ -19,8 +19,6 @@ <h2 class="alert-heading pb-3 text-center">{{ .title }}</h2>
       {{ markdownify .p3 }}
       {{ end }}
     </div>
-    <button type="button" class="close" data-bs-dismiss="alert" aria-label="Close">
-      <span aria-hidden="true">&times;</span>
-    </button>
+    <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
   </div>
 </div>