JSFiddle - React, Tailwind, and code Playground

HTML

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

CSS

.wrapper {
  padding:50px 0px;
  height: 50px;
  position: relative;
  width:300px;
  background: url("http://4.bp.blogspot.com/-dq50t26bK1o/TruhUtyIBWI/AAAAAAAANEw/kKnBQ1lSGik/s1600/bokeh_texture04.jpg");
}

.triangle {
  border-bottom: 50px solid #eee;
  width: 50px;
  position: absolute;
  bottom: 0;
}

.right {
  right: 0;
  border-left: 100px solid transparent;
}

.left {
  left: 0;
  border-right: 100px solid transparent;
}