<div class="box-shadow"></div>
.box-shadow{
  background-color: #FFDD40;
  width: 400px;
  height: 200px;
  margin: 15px auto;
  -webkit-box-shadow: 0px 30px 0px 0px rgba(150,150,150,1);
-moz-box-shadow: 0px 30px 0px 0px rgba(150,150,150,1);
box-shadow: 0px 30px 0px 0px rgba(150,150,150,1);
}

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