<div id="button-wrapper">
  <button>
      <p>Upload Something</p>
      <div class="fill"></div>
      <div class="fa fa-check"></div>
  </button>
</div>
@import url(https://fonts.googleapis.com/css?family=Roboto:400,300);

* {
    font-family: 'Roboto', sans-serif;
}

body {
    background: white;
}

button:focus {
    outline: none;
}

button:hover {
    background: #9b59b6;
}

h2 {
    font-size: 22px;
    line-height: 1.6;
    text-align: center;
    font-weight: 300;
    color: #777;
    font-family: 'Roboto', sans-serif;
    margin: 100px 0 0;
}

#button-wrapper {
    width: 450px;
    text-align: center;
    padding: 0 100px;
    box-sizing: border-box;
    -webkit-transition: .3s all ease .3s;
    transition: .3s all ease .3s;
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate3d(-50%, -50%, 0);
    transform: translate3d(-50%, -50%, 0);
}

button {
    width: 100%;
    background: #8e44ad;
    border: none;
    border-radius: 50px;
    padding: 5px 0;
    cursor: pointer;
    -webkit-transition: .3s all ease;
    transition: .3s all ease;
    position: relative;
}

button p {
    color: white;
    font-size: 18px;
    font-weight: 400;
    line-height: 40px;
    max-height: 40px;
    -webkit-transition: .3s all ease;
    transition: .3s all ease;
}

button .fill {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 0%;
    background: #8e44ad;
    border-radius: 50px;
}

button .fa {
    font-size: 25px;
    color: white;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    line-height: 50px;
    -webkit-transform: scale(0);
    -ms-transform: scale(0);
    transform: scale(0);
}

#button-wrapper.clicked {
    padding: 0;
}

#button-wrapper.clicked button {
    background: #ccc;
    margin-top: 25px;
}

#button-wrapper.clicked button p {
    max-height: 0;
    overflow: hidden
}

#button-wrapper.clicked button .fill {
    width: 100%;
    -webkit-transition: .3s all ease .3s;
    transition: 2s all ease .6s;
}

#button-wrapper.success button {
    margin: 0;
    padding: 25px;
    width: 50px;
}

#button-wrapper.success button .fa {
    -webkit-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
    -webkit-transition: .3s all ease .3s;
    transition: .3s all ease .3s;
}
button = document.querySelector "button"
parent = button.parentElement

button.addEventListener "click", ->
  parent.classList.add "clicked"
  setTimeout ( -> parent.classList.add "success"), 2600
  
balapaCop "Upload Progress Interaction", "#999"
View Compiled
Run Pen

External CSS

  1. https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css

External JavaScript

  1. https://codepen.io/balapa/pen/c58fffe58d661ae3d4b168a43eb3b2b8.js