diff --git a/src/parts/_misc.css b/src/parts/_misc.css
index 4c9b9c0..b3e5fa8 100644
--- a/src/parts/_misc.css
+++ b/src/parts/_misc.css
@@ -113,7 +113,8 @@ details > :not(summary) {
   margin-top: 0;
 }
 
-summary::marker {
+summary::marker,
+summary::-webkit-details-marker /* isn't autoprefixed, kept for backwards compatibility */ {
   color: var(--text-main);
 }
 
diff --git a/src/parts/_print.css b/src/parts/_print.css
index d8239cf..0717135 100644
--- a/src/parts/_print.css
+++ b/src/parts/_print.css
@@ -34,7 +34,8 @@
     color: #000;
   }
 
-  summary::marker {
+  summary::marker,
+  summary::-webkit-details-marker /* isn't autoprefixed, kept for backwards compatibility */ {
     color: #000;
   }