List some advantages to CSS3 animations over script-based animation?

Advantages of using CSS3 animations over script-based animation techniques are as follows:

1. Easy to use and anybody can create them without the knowledge of JavaScript.
2. Executes well even under reasonable system load. As simple animations perform poorly in JavaScript, the rendering engine uses the frame-skipping techniques to allow smooth flow of animation.
3. Allows the browser to control the animation sequence, optimize performance and efficiency by reducing the update frequency of animations executing in tabs that aren’t currently visible.