diff --git a/src/static/themes/auto/auto.css b/src/static/themes/auto/auto.css
new file mode 100644
index 00000000..67f3e52e
--- /dev/null
+++ b/src/static/themes/auto/auto.css
@@ -0,0 +1,2 @@
+@import '../dark/dark.css' (prefers-color-scheme: dark);
+@import '../default/default.css' (prefers-color-scheme: light);