JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">
  <div class="tooltip">Text runs wide and goes here</div>
</div>

CSS

.parent {
  position: relative;
  width: 100px;
  height: 100px;
    background-color: red;
}

.tooltip {
  background-color: yellow;
  position: absolute;
  top: 0;
  left: 0;
  margin: 0 auto;
  text-align: center;
  white-space: nowrap;
  padding: 5px 10px;
  width: auto;
}