<section>
<div class= "container">
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
</div>
</section>

body {
  display: flex;
  justify-content: space-evenly;
  margin-top: 200px;
}
.container {
  margin: 1rem;
}
.box {
  width: 50px;
  height: 50px;
  background: #44bba4;
  display: inline-block;
}
img {
  width: 200px;
}

 gsap.to(".box", {
  duration: 0.5,
  y: -40,
  rotate: 10,
  ease: "power1",
  yoyo: true,
  repeat: -1,
  stagger: {
  amount: 0.5, //  the total amount of time (in seconds) that gets split up among all the staggers. 
    from: 5 // the position in the array from which the stagger will emanate
  }
});