/* Add your script.js file(file containing animation code) , below GSAP CDN. */
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.9.1/gsap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.9.1/ScrollTrigger.min.js"></script>
/* Your js file goes after the CDN scripts, like so */
<script src="script.js"></script>