diff --git a/sphinx_rtd_theme/layout.html b/sphinx_rtd_theme/layout.html
index 5f9ef21e..372e12ea 100644
--- a/sphinx_rtd_theme/layout.html
+++ b/sphinx_rtd_theme/layout.html
@@ -42,6 +42,10 @@
{% endfor %}
+ {% for cssfile in extra_css_files %}
+
+ {% endfor %}
+
{%- block linktags %}
{%- if hasdoc('about') %}