Simple Progress Bar CSS/jQuery Plugin

Progress_Bar.css

  <style>
  
@-webkit-keyframes grow-width {
  from {
    width: 0;
  }
}
@keyframes grow-width {
  from {
    width: 0;
  }
}
body {
  font-family: "Open Sans", Arial;
  background: #EDEDED;
}

main {
  width: 720px;
  margin: 30px auto;
  padding: 10px 40px 30px;
  background: #FFF;
  overflow:hidden;
  
}

h1, h4 {
  text-align: center;
  color: #333;
}

p {
  font-size: 13px;
}

section {
	float:left;
  vertical-align: top;
  margin-top: 20px;
}

section:nth-of-type(odd) {
  margin-right: 20px;
}

.style-1 {
  list-style-type: none;
  padding: 0;
  width: 350px;
}
.style-1 li {
  position: relative;
  height: 50px;
}
.style-1 li em, .style-1 li span {
  display: block;
  border-bottom: 5px solid #EDEDED;
  padding-bottom: 5px;
}
.style-1 li em {
  font-style: normal;
  border-bottom-color: #b748f6;
  position: absolute;
  overflow: visible;
  -webkit-animation: grow-width 2s;
          animation: grow-width 2s;
}
.style-1 li span {
  text-align: right;
}

.style-2 {
  list-style-type: none;
  padding: 0;
  width: 350px;
}
.style-2 li {
  height: 50px;
}
.style-2 li em, .style-2 li span {
  padding: 5px 10px;
}
.style-2 li em {
  text-align: right;
  font-style: normal;
  float: left;
  width: 85px;
}
.style-2 li span {
  display: inline-block;
  background: #b748f6;
  overflow: visible;
  -webkit-animation: grow-width 2s;
          animation: grow-width 2s;
}

  
  </style> 

Progress_Bar.html

<main> 
  <section>
    <ul class="style-1">
      <li> <em>Jquery</em><span>55</span></li>
      <li><em>Html</em><span>75</span></li>
    </ul> 
   </section>    
      
   <section>   
    <ul class="style-2">    
     <li><em>Jquery</em> <span>453</span></li> 
      <li><em>Html</em><span>956</span></li>
    </ul>
  </section>
</main>

Progress_Bar.js

<script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>  
<script>
function setBarWidth(dataElement, barElement, cssProperty, barPercent) {
  var listData = [];
  $(dataElement).each(function() {
    listData.push($(this).html());
  });
  var listMax = Math.max.apply(Math, listData);
  $(barElement).each(function(index) {
    $(this).css(cssProperty, (listData[index] / listMax) * barPercent + "%");
  });
}
setBarWidth(".style-1 span", ".style-1 em", "width", 80);
setBarWidth(".style-2 span", ".style-2 span", "width", 55);
</script>