JSFiddle - React, Tailwind, and code Playground

HTML

<div class="row">
  <span class="category-span">Ecommerce</span><span class="triangle-up-left"></span>

</div>

CSS

.triangle-up-left {
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 20px 15px 0 0;
  border-color: #007bff transparent transparent transparent;
  position: absolute;
}

.category-span {
  padding: 10px;
  background-color: red;
}