diff --git a/src/components/Header.astro b/src/components/Header.astro
index bb1fc11..a4f0ec1 100644
--- a/src/components/Header.astro
+++ b/src/components/Header.astro
@@ -77,6 +77,10 @@
 			var(--transitionMedium) text-shadow;
 	}
 
+	summary::-webkit-details-marker {
+		display: none;
+	}
+
 	details[open] summary {
 		color: var(--colorEmphasizedBackground);
 		text-shadow: 0 0 3px var(--colorOffWhite);