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script.js

@@ -0,0 +1,15 @@
+const burger = document.getElementById("burger");
+const nav = document.getElementById("nav");
+const topBtn = document.getElementById("topBtn");
+
+burger.addEventListener("click", () => {
+  nav.classList.toggle("open");
+});
+
+window.addEventListener("scroll", () => {
+  topBtn.style.display = window.scrollY > 400 ? "block" : "none";
+});
+
+topBtn.addEventListener("click", () => {
+  window.scrollTo({ top: 0, behavior: "smooth" });
+});