Add visual button presets, jump targets and menu controls

templates/archive.html.twig

@@ -17,6 +17,7 @@
     <link rel="alternate" type="application/rss+xml" title="Beiträge" href="/feed.xml">
     {% include 'favicon.html.twig' %}
     <link rel="stylesheet" href="/assets/site.css?v={{ kant_version() }}">
+    <link rel="stylesheet" href="/assets/buttons.css?v={{ kant_version() }}">
     <link rel="stylesheet" href="/assets/design.css?v={{ kant_version() }}">
 </head>
 {% set consentOpen = not editing|default(false) and consentGate.needsBanner(app.request) %}