<body>
  
  <div class="upload">
      <span class="glyphicon glyphicon-arrow-up arrow" aria-hidden="true"></span>
      <span class="glyphicon glyphicon-ok ok" aria-hidden="true"></span>
  </div>
  <div class="button" data-text-swap="reset">upload</div>
  
</body>
body{
  background-color: #d4c2f2;
}

.upload{
  text-align: center;
  color: #fff;
  text-shadow: 0 2px 0 hsla(0,0%,0%,.075);
  font-size: 30px;
  background: {
      image: linear-gradient(to bottom, #b6c5cc 50%, #c0e8b9 50%);
      position: 0% 0%;
      size: 230%;
  }
  background-color: #b6c5cc;
  background-repeat: no-repeat;
  border: 6px solid #fff;
  border-radius: 50px;
  box-shadow: inset 0 2px 0 hsla(0,0%,0%,.1), 0 3px 0 hsla(0,0%,0%,.075);
  cursor: pointer;
  height: 80px;
  left: 50%;
  margin: -43px;
  margin-top: -100px;
  position: absolute;
  top: 50%;
  width: 80px;
  transition: background 3s ease-in-out;
}

.uploading{
  background-position: 0% 100%;
}

span{
  margin-top: 16px;
  margin-left: -3px;
  transition: 0.1s 2s ease-in-out;
}

.ok{
  position: absolute;
  left: 22px;
  top: 50px;
  opacity: 0;
}

.bounce{
  animation: bounce 0.3s ease 2.5s forwards;
}

.arrow-out{
  top: -20px;
  visibility: hidden;
}

.button{
  position: absolute;
  width: 120px;
  height: 30px;
  background-color: #fff;
  top: 50%;
  left: 50%;
  margin-left: -60px;
  margin-top: 10px;
  border-radius: 5px;
  box-shadow: 0 3px 0 hsla(0,0%,0%,.075);
  text-align: center;
  line-height: 30px;
  font-size: 16px;
  text-transform: uppercase;
  color: #888;
  cursor: pointer;
  transition: 0.2s;
  
  &:active{
    box-shadow: 0 0 0;
    margin-top: 12px;
   }
}


@keyframes bounce{
  0%{
    top: 50px;
    opacity: 0;
  }
  80%{
    top: -5px;
  }
  100%{
    top: 0;
    opacity: 1;
  }
}
View Compiled
var button = document.querySelector('.button');
var upload = document.querySelector('.upload');
var arrow = document.querySelector('.arrow');
var ok = document.querySelector('.ok');

button.addEventListener('click', function() {
  upload.classList.toggle('uploading')
  arrow.classList.toggle('arrow-out')
    if(arrow.classList.contains('arrow-out')){
      ok.classList.add('bounce');
    }else{
      ok.classList.remove('bounce');
    }
  if (button.getAttribute("data-text-swap") == button.innerHTML) {
    button.innerHTML = button.getAttribute("data-text-original");
  } else {
    button.setAttribute("data-text-original", button.innerHTML);
    button.innerHTML = button.getAttribute("data-text-swap");
  }
});

External CSS

  1. https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css

External JavaScript

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