<div class="box">
  <div class="btn not-active">
    <span></span>
    <span></span>
    <span></span>
  </div>
</div>

/* 
green: #3FAF82

*/

.box {
  border-radius: 2px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  background: #3faf82;
  box-shadow: 1px 2px 10px 0px rgba(0,0,0,0.3);
}

.btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  cursor: pointer;
}

span {
  display: block;
  width: 100%;
  box-shadow: 0 2px 10px 0 rgba(0,0,0,0.3);
  border-radius: 3px;
  height: 8px;
  background: #fff;
  transition: all .3s;
  position: relative;
}

span + span {
  margin-top: 14px;
}

.active span:nth-child(1) {
  animation: ease .7s top forwards;
}

.not-active span:nth-child(1) {
  animation: ease .7s top-2 forwards;
}

.active span:nth-child(2) {
  animation: ease .7s scaled forwards;
}

.not-active span:nth-child(2) {
  animation: ease .7s scaled-2 forwards;
}

.active span:nth-child(3) {
  animation: ease .7s bottom forwards;
}

.not-active span:nth-child(3) {
  animation: ease .7s bottom-2 forwards;
}

@keyframes top {
  0% {
    top: 0;
    transform: rotate(0);
  }
  50% {
    top: 22px;
    transform: rotate(0);
  }
  100% {
    top: 22px;
    transform: rotate(45deg);
  }
}

@keyframes top-2 {
  0% {
    top: 22px;
    transform: rotate(45deg);
  }
  50% {
    top: 22px;
    transform: rotate(0deg);
  }
  100% {
    top: 0;
    transform: rotate(0deg);
  }
}

@keyframes bottom {
  0% {
    bottom: 0;
    transform: rotate(0);
  }
  50% {
    bottom: 22px;
    transform: rotate(0);
  }
  100% {
    bottom: 22px;
    transform: rotate(135deg);
  }
}

@keyframes bottom-2 {
  0% {
    bottom: 22px;
    transform: rotate(135deg);
  }
  50% {
    bottom: 22px;
    transform: rotate(0);
  }
  100% {
    bottom: 0;
    transform: rotate(0);
  }
}

@keyframes scaled {
  50% {
    transform: scale(0);
  }
  100% {
    transform: scale(0);
  }
}

@keyframes scaled-2 {
  0% {
    transform: scale(0);
  }
  50% {
    transform: scale(0);
  }
  100% {
    transform: scale(1);
  }
}
var btn = $('.btn');

btn.on('click', function() {
  $(this).toggleClass('active');
  $(this).toggleClass('not-active');
});

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js