diff --git a/docs/manual/faq/_index.de.md b/docs/manual/faq/_index.de.md
index 084815515..e405867e6 100644
--- a/docs/manual/faq/_index.de.md
+++ b/docs/manual/faq/_index.de.md
@@ -71,6 +71,25 @@ Die Information hierzu findest du unter [Template-Daten anzeigen](/de/layout/tem
 Die Information hierzu findest du unter [TinyMCE-Editor Konfiguration](/de/anleitungen/tinymce-konfiguration/).
 {{% /faq %}}
 
+{{% faq "Wie kann ich eine CSS-Klasse zu allen Überschriften hinzufügen?" %}}
+Um eine CSS-Klasse zu der Überschrift aller modernen Fragments (Inhaltselemente oder Frontend-Module) im Frontend
+hinzuzufügen, können die HTML Attribute des `headline` Objektes in der `_headline`
+[Twig Komponente](https://docs.contao.org/dev/framework/templates/creating-templates/#contao-components) angepasst werden:
+
+```twig
+{# templates/component/_headline.html.twig #}
+{% use "@Contao/component/_headline.html.twig" %}
+
+{% block headline_attributes -%}
+    {%- set headline = headline|merge({attributes: attrs().addClass('foobar').mergeWith(headline.attributes|default)}) -%}
+    {{ parent() }}
+{%- endblock %}
+```
+
+Beachte, dass dies bei Inhaltselementen oder Frontend-Modulen, die noch PHP Templates verwenden - oder die `_headline`
+Twig Komponente nicht verwenden, keine Auswirkung hat.
+{{% /faq %}}
+
 
 ## Installation
 
diff --git a/docs/manual/faq/_index.en.md b/docs/manual/faq/_index.en.md
index 8c11bfdcd..f210bde12 100644
--- a/docs/manual/faq/_index.en.md
+++ b/docs/manual/faq/_index.en.md
@@ -70,6 +70,25 @@ The information about this can be found under [Show Template Data](/en/layout/te
 The information about this can be found under [TinyMCE Editor Configuration](/en/guides/tinymce-configuration/).
 {{% /faq %}}
 
+{{% faq "How can I add a CSS class to all headlines?" %}}
+You can add a CSS class to all headlines of all modern fragments (content elements or front end modules) in the front
+end by setting the HTML attributes of the `headline` object in the `_headline`
+[Twig component](https://docs.contao.org/dev/framework/templates/creating-templates/#contao-components)):
+
+```twig
+{# templates/component/_headline.html.twig #}
+{% use "@Contao/component/_headline.html.twig" %}
+
+{% block headline_attributes -%}
+    {%- set headline = headline|merge({attributes: attrs().addClass('foobar').mergeWith(headline.attributes|default)}) -%}
+    {{ parent() }}
+{%- endblock %}
+```
+
+Note that this will not affect content elements and modules using legacy templates - or templates that are not using the
+`_headline` component.
+{{% /faq %}}
+
 
 ## Installation