diff --git a/src/Header/Header.css b/src/Header/Header.css
index 01ca90b..67f3acb 100644
--- a/src/Header/Header.css
+++ b/src/Header/Header.css
@@ -42,7 +42,7 @@ header[bt] {
       }
     }
 
-    &:not(.overflowing):has([bt-navbar-toggler]) {
+    &:has([bt-navbar-toggler])[bt-large-menu] {
       & > ul {
         margin-right: 3.5rem;
       }
@@ -52,7 +52,7 @@ header[bt] {
       }
     }
 
-    &.overflowing {
+    &:not([bt-large-menu]) {
       & > ul {
         visibility: hidden;
       }
diff --git a/src/Header/Header.ts b/src/Header/Header.ts
index 16bb54b..109853f 100644
--- a/src/Header/Header.ts
+++ b/src/Header/Header.ts
@@ -16,9 +16,9 @@ onElementConnected('header[bt] > nav', (navigation) => {
     (entries) => {
       const entry = entries[0];
       if (!entry.isIntersecting) {
-        navigation.classList.add('overflowing');
+        navigation.removeAttribute('bt-large-menu');
       } else {
-        navigation.classList.remove('overflowing');
+        navigation.setAttribute('bt-large-menu', '');
       }
     },
     {