diff --git a/doc/style.css b/doc/style.css
index 24be520..cc6fb46 100644
--- a/doc/style.css
+++ b/doc/style.css
@@ -25,3 +25,8 @@ pre { overflow-x: scroll; }
 .snac-btn-unlimit { float: right; margin-left: 0.5em }
 .snac-footer { margin-top: 2em; font-size: 75% }
 .snac-poll-result { margin-left: auto; margin-right: auto; }
+@media (prefers-color-scheme: dark) { 
+  body { background-color: #000; color: #fff; }
+  a { color: #7799dd }
+  a:visited { color: #aa99dd }
+}