JSFiddle - React, Tailwind, and code Playground

HTML

<div class="example2">

  <span>text</span>

</div>

CSS

.example2 {
  display: inline-block;
  position: relative;
  width: 300px;
  height: 300px;

}

.example2 span {
  display: inline-block;
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFF;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 50px;
  text-align: center;
  background-color: rgba(0, 0, 0, .2);
  padding: 10px 30px;
  width: 100%;
  height: 100%;
}