JSFiddle - React, Tailwind, and code Playground

HTML

<div class="pic">
  <div class="pic-item">
    
  </div>
</div>

CSS

html, body {
  margin: 0;
  height: 100%;
}

.pic {
  position: relative;
  width: 100%;
  height: 100%;
  background-color: cyan;
}
.pic-item {
  position: relative;
  width: 100%;
  height: 100%;
  background-color: black;
  clip-path: polygon(0 0, 80% 0, 70% 50%, 80% 100%, 0 100%);
}