add functionalities

Author: tajulafreen

ScrollAnimation/script.js

@@ -0,0 +1,16 @@
+const contents = document.querySelectorAll('.content');
+
+const checkBoxes = () => {
+  const triggerBottom = (window.innerHeight / 5) * 4;
+  contents.forEach((content) => {
+    const boxTop = content.getBoundingClientRect().top;
+    if (boxTop < triggerBottom) {
+      content.classList.add('show');
+    } else {
+      content.classList.remove('show');
+    }
+  });
+};
+
+window.addEventListener('scroll', checkBoxes);
+checkBoxes();