initial commit

themes/gallery/assets/js/menu.js

@@ -0,0 +1,9 @@
+const el = document.getElementById("menu-toggle");
+if (el) {
+  el.addEventListener("click", (event) => {
+    event.preventDefault();
+    const target = document.getElementById("menu");
+    el.ariaExpanded = target.classList.contains("hidden");
+    target.classList.toggle("hidden");
+  });
+}