diff --git a/sphinx/themes/basic/layout.html b/sphinx/themes/basic/layout.html
index 9163a18a2..131d2c533 100644
--- a/sphinx/themes/basic/layout.html
+++ b/sphinx/themes/basic/layout.html
@@ -95,8 +95,8 @@
{%- endmacro %}
{%- macro css() %}
-
+
{%- for css in css_files %}
{%- if css|attr("filename") %}
{{ css_tag(css) }}