var tl = gsap.timeline({delay: 1, repeat: -1, yoyo: true});
//sequenced one-after-the-other
tl.to(".box1", {duration: 1, rotation: -360})
 .to(".box2", {duration: 2, x: -100, ease: 'elastic.out'})
 .to(".box3", {duration: 2, rotation: 360, x: 100, ease: 'expo.out'});