diff --git a/contao/templates/root/.twig-root b/contao/templates/root/.twig-root
new file mode 100644
index 0000000..e69de29
diff --git a/contao/templates/root/content_element/_base.html.twig b/contao/templates/root/content_element/_base.html.twig
new file mode 100644
index 0000000..5f028f9
--- /dev/null
+++ b/contao/templates/root/content_element/_base.html.twig
@@ -0,0 +1,3 @@
+{% extends '@Contao/content_element/_base.html.twig' %}
+
+{% set attributes = attrs(attributes|default).addClass(data.toolbox_classes|default('')|split(' ')) %}