JSFiddle - React, Tailwind, and code Playground

by Casufi

HTML

<div class="label">
Hello
<div class="corner">
</div>
</div>

CSS

.label {
  width: 220px;
  height: 440px;
  background-color: #fff;
  border: 1px solid black;
  position: relative;
}
.corner::before{
  
}