<div class="box clipInset"></div>
.box {
  width: 300px;
  height: 300px;
  margin: 28px auto;
  background: black url(https://ununsplash.imgix.net/photo-1415302199888-384f752645d0?q=75&fm=jpg&s=823bdcc1b7ad955f5180efd352561016);
  background-size: cover;
}

.clipInset {
  -webkit-clip-path: inset(25% 0 round 0% 25%);
}

External CSS

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External JavaScript

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