<div class="box effect4">
<h3>Effect 4</h3>
</div>
body {background:#ccc}

.box h3{
  text-align:center;
	position:relative;
	top:80px;
}
.box {
	height:200px;
	background:#FFF;
  
}

/*==================================================
 * Effect 4
 * ===============================================*/
.effect4
{
  position:fixed;
  top:0;
  left:0;
  right:0;
}
.effect4:after
{
  z-index: -1;
  position: absolute;
  content: "";
  bottom: 15px;
  right: 10px;
  left: auto;
  width: 50%;
  top: 80%;
  background: #777;
  -webkit-box-shadow: 0 15px 10px #777;
  -moz-box-shadow: 0 15px 10px #777;
  box-shadow: 0 15px 10px #777;
  -webkit-transform: rotate(3deg);
  -moz-transform: rotate(3deg);
  -o-transform: rotate(3deg);
  -ms-transform: rotate(3deg);
  transform: rotate(3deg);
}
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External CSS

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External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js