diff --git a/src/index.scss b/src/index.scss
index 1295b19..2df89d7 100644
--- a/src/index.scss
+++ b/src/index.scss
@@ -18,3 +18,7 @@ code {
   font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
   monospace;
 }
+
+:root {
+  color-scheme: dark;
+}