diff --git a/theme/assets/css/main.css b/theme/assets/css/main.css
index af9523d..e72205a 100644
--- a/theme/assets/css/main.css
+++ b/theme/assets/css/main.css
@@ -282,7 +282,6 @@ p:last-child { margin-bottom: 0; }
   padding-block: .65rem;
   -webkit-backdrop-filter: blur(8px);
   backdrop-filter: blur(8px);
-  will-change: transform;
 }
 
 .header-inner {
@@ -533,6 +532,10 @@ p:last-child { margin-bottom: 0; }
   body.menu-open {
     overflow: hidden;
   }
+  body.menu-open .site-header.scrolled {
+    -webkit-backdrop-filter: none;
+    backdrop-filter: none;
+  }
   .site-nav.open .nav-menu {
     flex-direction: column;
     align-items: flex-start;