diff --git a/assets/dark.scss b/assets/dark.scss
index c0e3dcacd..ce8909b80 100644
--- a/assets/dark.scss
+++ b/assets/dark.scss
@@ -235,4 +235,12 @@ body[data-theme="dark"] {
       }
     }
   }
+
+  @include media-breakpoint-up('lg', $grid-breakpoints) {
+    header {
+      @supports not (backdrop-filter: blur(12px)) {
+        background-color: $dark;
+      }
+    }
+  }
 }