diff --git a/docs/_static/css/my_theme.css b/docs/_static/css/my_theme.css
index ccd7d2060..470452661 100644
--- a/docs/_static/css/my_theme.css
+++ b/docs/_static/css/my_theme.css
@@ -16,3 +16,7 @@
 .hide-title h1 {
     display: none;
 }
+
+html[data-theme="dark"] .rst-content div[class^="highlight"] {
+  background-color: #0b0b0b;
+}