Web animations, particularly CSS transitions, serve more than just decorative purposes on websites by guiding user attention, organizing information, and enhancing user experience. CSS transitions allow developers to smoothly change the value of a property in response to user interactions, such as hovering or clicking, and are best suited for animations with only initial and final states. On the other hand, CSS keyframe animations are more appropriate for complex animations involving multiple states. The article provides an example of using CSS transitions to morph a toggle button icon from a hamburger to an X shape, both on hover and on click, utilizing JavaScript for class toggling. Moreover, it discusses creating animations for dynamically generated elements using the Web Animations API, which offers a performance-efficient way to animate elements without relying on traditional JavaScript methods. The exploration of these animations and transitions highlights their potential to create engaging and efficient user interfaces.