Adjacent divs with angled borders? [duplicate]

.left, .right {
  position: relative;
  height: 100px;
  width: 200px;
  background: #000;
  float: left;
}

.left:after {
  content: '';
  line-height: 0;
  font-size: 0;
  width: 0;
  height: 0;
  border-top: 100px solid #000;
  border-bottom: 50px solid transparent;
  border-left: 0px solid transparent;
  border-right: 50px solid transparent;
  position: absolute;
  top: 0;
  right: -50px;
}

.right {
  margin-left: 60px;
  width: 100px;
}

.right:before {
  content: '';
  line-height: 0;
  font-size: 0;
  width: 0;
  height: 0;
  border-top: 50px solid transparent;
  border-bottom: 100px solid #000;
  border-left: 50px solid transparent;
  border-right: 0px solid #000;
  position: absolute;
  top: -50px;
  left: -50px;
}

<div class="left"> </div>
<div class="right"> </div>

.left, .right {
    background: #000 url('http://lorempixel.com/300/100');
    position: relative;
    height: 100px;
    width: 250px;
    float: left;
}

.left:after {
    content: '';
    line-height: 0;
    font-size: 0;
    width: 0;
    height: 0;
    border-top: 50px solid transparent;
    border-bottom: 100px solid #fff;
    border-left: 30px solid transparent;
    border-right: 0 solid #fff;
    position: absolute;
    top: -50px;
    right: 0;
}

.right {
    background: #000 url('http://lorempixel.com/200/100');
    width: 150px;
}

.right:before {
    content: '';
    line-height: 0;
    font-size: 0;
    width: 0;
    height: 0;
    border-top: 100px solid #fff;
    border-bottom: 50px solid transparent;
    border-left: 0px solid transparent;
    border-right: 30px solid transparent;
    position: absolute;
    top: 0;
    left: 0;
}

<div class="left"> </div>
<div class="right"> </div>