diff --git a/src/base.html b/src/base.html
index c7f5ad834..2519d0e15 100644
--- a/src/base.html
+++ b/src/base.html
@@ -38,13 +38,6 @@
         <meta name="description" content="{{ config.site_description }}" />
       {% endif %}
 
-      <!-- Page keywords -->
-      {% if page and page.meta and page.meta.keywords %}
-        <meta name="keywords" content="{{ page.meta.keywords }}" />
-      {% elif config.site_keywords %}
-        <meta name="keywords" content="{{ config.site_keywords }}" />
-      {% endif %}
-
       <!-- Page author -->
       {% if page and page.meta and page.meta.author %}
         <meta name="author" content="{{ page.meta.author }}" />
@@ -127,15 +120,6 @@
       {% endif %}
     {% endblock %}
 
-    <!-- Progressive Web App Manifest -->
-    {% if config.extra.manifest %}
-      <link
-        rel="manifest"
-        href="{{ config.extra.manifest | url }}"
-        crossorigin="use-credentials"
-      />
-    {% endif %}
-
     <!-- Custom style sheets -->
     {% for path in config["extra_css"] %}
       <link rel="stylesheet" href="{{ path | url }}" />
@@ -214,8 +198,8 @@
     <!-- Announcement bar -->
     <div data-md-component="announce">
       {% if self.announce() %}
-        <aside class="md-banner md-announce">
-          <div class="md-banner__inner md-announce__inner md-grid md-typeset">
+        <aside class="md-banner">
+          <div class="md-banner__inner md-grid md-typeset">
             {% block announce %}{% endblock %}
           </div>
         </aside>