diff --git a/static/css/theme-green.css b/static/css/theme-green.css
index 4cb190410c..abc2435f1d 100644
--- a/static/css/theme-green.css
+++ b/static/css/theme-green.css
@@ -47,7 +47,3 @@
     --BOX-BG-color: rgba( 255, 255, 255, .833 ); /* color of the content background */
     --BOX-TEXT-color: rgba( 16, 16, 16, 1 ); /* fixed color of the content text */
 }
-
-:root {
-    color-scheme: only light; /* set browser scrollbar color */
-}
diff --git a/static/css/theme-red.css b/static/css/theme-red.css
index 37ab98b109..84148ef7d8 100644
--- a/static/css/theme-red.css
+++ b/static/css/theme-red.css
@@ -47,7 +47,3 @@
     --BOX-BG-color: rgba( 255, 255, 255, .833 ); /* color of the content background */
     --BOX-TEXT-color: rgba( 16, 16, 16, 1 ); /* fixed color of the content text */
 }
-
-:root {
-    color-scheme: only light; /* set browser scrollbar color */
-}
diff --git a/static/css/theme-relearn-dark.css b/static/css/theme-relearn-dark.css
index e2aa4a85b7..c098e263f5 100644
--- a/static/css/theme-relearn-dark.css
+++ b/static/css/theme-relearn-dark.css
@@ -47,7 +47,3 @@
     --BOX-BG-color: rgba( 20, 20, 20, 1 ); /* background color of colored boxes */
     --BOX-TEXT-color: #e0e0e0; /* text color of colored box content */
 }
-
-:root {
-    color-scheme: only dark; /* set browser scrollbar color */
-}