feat: scroll window element observer

js/main.js

@@ -0,0 +1,15 @@
+// function app() {
+const observer = new IntersectionObserver((entries) => {
+  entries.forEach((entry) => {
+    console.log('entry ==>', entry);
+    if (entry.isIntersecting) {
+      entry.target.classList.add('animate');
+    }
+  });
+});
+
+const hiddenElements = document.querySelectorAll('.inanimate');
+hiddenElements.forEach((element) => observer.observe(element));
+// }
+
+// app();