How to make a div clickable using jquery

HTML

<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<div class="clickable-div">
	web files
</div>
<div class="popup">
 
  <span class="close">
    <i class="fa fa-close"></i>
  </span>
</div>

CSS

.clickable-div
{
	width:400px;
	padding:50px;
	text-align:center;
	background:#CC9900;
	cursor:pointer;
}
.clickable-div a
{
	color:#333;
	text-decoration:none;
	font-weight:bold;
}
.popup{
  display:block;
  width:500px;
  height:250px;
  background:#fff;
  border-radius:5px;
  margin:80px auto;
  padding:10px;
  z-index:999;
  overflow:hidden;
  -webkit-transform:translateY(-300%);
  transform:translateY(-300%);
  -moz-box-shadow: 0px 0px 20px rgba(56,56,56,.2);
-webkit-box-shadow: 0px 0px 20px rgba(56,56,56,.2);
box-shadow: 0px 0px 20px rgba(56,56,56,.2);
  text-align:center;
  line-height:7em;
  font-size:2em;
  position:relative;
  -webkit-transition: all 900ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transition: all 900ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.popup h1{
  color:#8e54e9;
  text-transform:capitalize;
  font-weight:200;
  font-size:1.1em;
  position:relative;
  left:-200%;
    -webkit-transition: all 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transition: all 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  -webkit-transition-delay:900ms;
  transition-delay:900ms;
}

.popup .close{
  position:absolute;
  top:-80px;
  right:15px;
  font-size:.9em;
  font-weight:lighter;
  cursor:pointer;
  color:#8e54e9;
  -webkit-transition:.5s;
  transition:.5s;
}

.overlay{
  overflow-x:hidden;
  overflow-y:hidden;
   -webkit-transition:all 3s ease-in-out;
   transition:all 3s ease-in-out;
}

.overlay::before{
    content: " ";
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: 8;
    top: 0;
    left: 0;
    background: rgba(0, 0, 0, .5);
   -webkit-transition:3s;
   transition:3s ;
}
.skillbar {
	position:relative;
	display:block;
	margin-bottom:15px;
	width:100%;
	background:#eee;
	height:15px;
	border-radius:3px;
	-moz-border-radius:3px;
	-webkit-border-radius:3px;
	-webkit-transition:0.4s linear;
	-moz-transition:0.4s linear;
	-ms-transition:0.4s linear;
	-o-transition:0.4s linear;
	transition:0.4s...

JavaScript

$(document).ready(function(e) {
        $('.clickable-div').click(function(){
				 
			$('.popup').css({
      'transform':'translateY(0)',
      'z-index':'999'
    });
    
    $('body').addClass('overlay');
    
    $('.popup h1').animate({
      left:'0'
    },1000);
    
    $(this).css({
      'z-index':'-1'
    });
    
    $('.popup > .close').on('click',function(){
      $(this).parent().css({
      'transform':'translateY(-300%)'
     });
     
      $('body').removeClass('overlay');
      $(this).parent().siblings('.btn').css({
        'z-index':'1'
      });
    });
  });
    });