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backg.js

@@ -0,0 +1,23 @@
+function addFadeOut() {
+    document.body.classList.add('fade-out');
+}
+
+
+function removeFadeOut() {
+    document.body.classList.remove('fade-out');
+}
+
+
+window.addEventListener('beforeunload', addFadeOut);
+
+
+window.addEventListener('load', removeFadeOut);
+
+
+window.addEventListener('popstate', () => {
+   
+    addFadeOut();
+    setTimeout(() => {
+        removeFadeOut(); 
+    }, 500); 
+});