diff --git a/src/index.css b/src/index.css
index 1084a88..25562e3 100644
--- a/src/index.css
+++ b/src/index.css
@@ -123,6 +123,7 @@ limitations under the License.
 body {
   background-color: var(--bgColor1);
   color: var(--textColor1);
+  color-scheme: dark;
   margin: 0;
   font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto",
     "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",