JSFiddle - React, Tailwind, and code Playground

HTML

<div id="parent">
    parent
  <div id="child">
      child child child child child child child child child
  </div>
</div>

CSS

div {color: white;}
#parent {
  /*overflow:hidden; */
background-color: red;
height: 60px;
}
#child {
  position:absolute;
  background-color: blue;
  }