JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

div {
  width: 200px;
  height: 200px;
  border-radius: 10px;
  position: relative;
  
}

div::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at 110% 50%, transparent 20px, #fc7d29 21px);
}

div::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle at -10% 50%, transparent 20px, #fc7d29 21px);
}



body {
  background-image: linear-gradient(45deg, #fff, #ccc);
  background-size: 20px 20px;
}