beforestyle

<div class="yo"></div>

.yo {

  height:100px;

  width:200px;

  background-color:black;

  border-left-color:#444 #999;

  margin:30px;

          background: linear-gradient(#212121, #444) repeat scroll 0 0 rgba(0, 0, 0, 0);

}

.yo:before {

    margin:30px;

        background: linear-gradient(#FF7700, #FF3300) repeat scroll 0 0 rgba(0, 0, 0, 0);

    bottom: -1px;

    content: "";

    left: 0;

    position: absolute;

    top: 0px;

    width: 5px;

    height:100px;

}